diff --git a/src/views/l2/pdo/components/PdoSummary.vue b/src/views/l2/pdo/components/PdoSummary.vue
index b963110..5efcc53 100644
--- a/src/views/l2/pdo/components/PdoSummary.vue
+++ b/src/views/l2/pdo/components/PdoSummary.vue
@@ -2,7 +2,7 @@
 <template>
   <el-descriptions 
     class="summary-content" 
-    :column="1" 
+    :column="6" 
     :style="{ width: '100%' }"
     size="mini"
   >
@@ -73,7 +73,6 @@ export default {
 <style lang="scss" scoped>
 .summary-content {
   padding: 10px;
-  flex: 1;
   
   &::-webkit-scrollbar {
     width: 4px;
diff --git a/src/views/l2/pdo/components/line.vue b/src/views/l2/pdo/components/line.vue
index 339e9cd..56f66bd 100644
--- a/src/views/l2/pdo/components/line.vue
+++ b/src/views/l2/pdo/components/line.vue
@@ -1,13 +1,36 @@
 <template>
   <div class="monitoring-container">
-    <div class="chart-wrapper" v-loading="loading">
-      <!-- Parameter selection dropdown / 参数选择下拉框 -->
-      <el-select v-model="paramField" class="param-select" @change="handleParamChange" size="mini">
-        <el-option v-for="item in paramFields" :key="item.value" :label="item.label" :value="item.value"></el-option>
-      </el-select>
+    <div style="height: 100%; display: flex; box-sizing: border-box;">
+      <!-- 左侧树形选择器（最多勾选4个） -->
+      <div style="height: 100%; width: 320px; overflow-y: scroll; border-right: 1px solid #e8e8e8; padding: 10px;">
+        <el-tree :data="paramFields" :props="treeProps" node-key="value" show-checkbox @check="handleCheckChange"
+          ref="paramTree" :check-strictly="true"></el-tree>
+      </div>
 
-      <!-- Chart container / 图表容器 -->
-      <div ref="chart" class="chart-content"></div>
+      <!-- 右侧图表布局容器（总高度100%） -->
+      <div class="charts-layout-wrapper"
+        :style="{ height: '100%', width: '100%', padding: '10px', boxSizing: 'border-box' }">
+        <!-- 核心：根据勾选数量动态控制布局样式 -->
+        <div class="charts-container" :class="{
+          'count-1': checkedCount === 1,
+          'count-2': checkedCount === 2,
+          'count-3': checkedCount === 3,
+          'count-4': checkedCount === 4
+        }" :style="{ height: '100%', width: '100%' }">
+          <!-- 预生成4个固定图表容器（初始隐藏） -->
+          <div v-for="(chartKey, index) in presetChartKeys" :key="chartKey" class="preset-chart-item" :style="{
+            display: index < checkedCount ? 'block' : 'none', // 根据勾选数量显示对应图表
+          }" v-loading="getChartLoading(index)">
+            <div class="chart-title">{{ getChartTitle(index) }}</div>
+            <div :ref="chartKey" class="chart-content"></div>
+          </div>
+
+          <!-- 无勾选时显示提示 -->
+          <div v-if="checkedCount === 0" class="no-param-tip">
+            Please place the parameter on the left to display the chart. (Max 4)
+          </div>
+        </div>
+      </div>
     </div>
   </div>
 </template>
@@ -15,6 +38,8 @@
 <script>
 import * as echarts from 'echarts'
 import { getSegmentList } from '@/api/business/segment'
+// 引入Vue（用于Vue.set实现响应式赋值，Vue2必备）
+import Vue from 'vue'
 
 export default {
   name: 'DeviceMonitoring',
@@ -26,276 +51,336 @@ export default {
   },
   data() {
     return {
-      // Parameter list from monitoring fields defined in DeviceEnum / 参数列表来源于 DeviceEnum 定义的监测字段
+      // 参数列表
       paramFields: [
-        { label: 'Strip Speed', value: 'stripSpeed' }, // 带钢速度
-        { label: 'Pay-off Tension 1#', value: 'tensionPorBr1' }, // 开卷张力1#
-        { label: 'Pay-off Tension 2#', value: 'tensionPorBr2' }, // 开卷张力2#
-        { label: 'Cleaning Voltage', value: 'cleaningVoltage' }, // 清洗电压
-        { label: 'Cleaning Current', value: 'cleaningCurrent' }, // 清洗电流
-        { label: 'Alkali Concentration', value: 'alkaliConcentration' }, // 碱液浓度
-        { label: 'Alkali Temperature', value: 'alkaliTemperature' }, // 碱液温度
-        { label: 'PH Furnace Exit Temp', value: 'phfExitStripTemp' }, // PH炉出口温度
-        { label: 'Heating Section Exit Temp', value: 'rtfExitStripTemp' }, // 加热段出口温度
-        { label: 'Cooling Section Exit Temp', value: 'jcsExitStripTemp' }, // 冷却段出口温度
-        { label: 'Equilibrium Section Exit Temp', value: 'scsExitStripTemp' }, // 均衡段出口温度
-        { label: 'Pot Temperature', value: 'potTemperature' }, // 锌锅温度
-        { label: 'Zinc Pot Power', value: 'zincPotPower' }, // 锌锅功率
-        { label: 'Gas Consumption', value: 'gasConsumption' }, // 燃气消耗
-        { label: 'Cooling Tower Temp', value: 'coolingTowerStripTemp' }, // 冷却塔温度
-        { label: 'TM Tension', value: 'tensionBr5Tm' }, // 光整机张力
-        { label: 'TM Exit Speed', value: 'stripSpeedTmExit' }, // TM出口速度
-        { label: 'TL Elongation', value: 'tlElongation' }, // 拉矫延伸率
-        { label: 'TL Tension', value: 'tensionTlBr7' } // 拉矫张力
+        { label: 'Strip Speed', value: 'stripSpeed' },
+        { label: 'Pay-off Tension 1#', value: 'tensionPorBr1' },
+        { label: 'Pay-off Tension 2#', value: 'tensionPorBr2' },
+        { label: 'Cleaning Voltage', value: 'cleaningVoltage' },
+        { label: 'Cleaning Current', value: 'cleaningCurrent' },
+        { label: 'Alkali Concentration', value: 'alkaliConcentration' },
+        { label: 'Alkali Temperature', value: 'alkaliTemperature' },
+        { label: 'PH Furnace Exit Temp', value: 'phfExitStripTemp' },
+        { label: 'Heating Section Exit Temp', value: 'rtfExitStripTemp' },
+        { label: 'Cooling Section Exit Temp', value: 'jcsExitStripTemp' },
+        { label: 'Equilibrium Section Exit Temp', value: 'scsExitStripTemp' },
+        { label: 'Pot Temperature', value: 'potTemperature' },
+        { label: 'Zinc Pot Power', value: 'zincPotPower' },
+        { label: 'Gas Consumption', value: 'gasConsumption' },
+        { label: 'Cooling Tower Temp', value: 'coolingTowerStripTemp' },
+        { label: 'TM Tension', value: 'tensionBr5Tm' },
+        { label: 'TM Exit Speed', value: 'stripSpeedTmExit' },
+        { label: 'TL Elongation', value: 'tlElongation' },
+        { label: 'TL Tension', value: 'tensionTlBr7' }
       ],
-      paramField: 'stripSpeed',
       treeProps: {
         children: 'children',
         label: 'label'
       },
-      currentParam: null, // Currently selected parameter / 当前选中的参数
-      chart: null, // Chart instance / 图表实例
-      chartData: [], // Chart data / 图表数据
-      timeStamps: [], // Timestamps / 时间戳
-      originalTimeStamps: [], // Original timestamps (for sampling) / 原始时间戳（用于采样）
-      originalChartData: [], // Original chart data (for sampling) / 原始图表数据（用于采样）
-      timeRange: '1', // Time range (minutes) / 时间范围(分钟)
-      socket: null, // Simulated socket / 模拟socket
-      latestValue: 0,
-      maxValue: 0,
-      minValue: 0,
-      avgValue: 0,
-      loading: false,
-      maxXAxisLabels: 40 // Maximum number of labels displayed on X-axis / X轴最多显示的标签数量
+      checkedNodes: [], // 已勾选参数列表
+      checkedCount: 0, // 已勾选数量（用于布局控制）
+      presetChartKeys: ['chart1', 'chart2', 'chart3', 'chart4'], // 4个固定图表key
+      chartInstances: {}, // 4个固定图表实例 { chart1: echartsInstance, ... }
+      chartDataMap: {}, // 参数数据映射 { paramValue: { timeStamps: [], chartData: [], ... } }
+      statMap: {}, // 参数统计值映射 { paramValue: { latestValue: 0, ... } }
+      loadingMap: {}, // 参数加载状态映射 { paramValue: boolean }
+      maxXAxisLabels: 40,
+      maxCheckCount: 4
     }
   },
   watch: {
     enCoilID: {
       handler(newVal) {
-        console.log('enCoilID changed:', newVal); // enCoilID 变化
+        console.log('enCoilID changed:', newVal);
         if (newVal) {
-          this.fetchChartData();
+          // 批量更新所有已勾选参数的图表
+          this.checkedNodes.forEach((param, index) => {
+            if (index < this.presetChartKeys.length) {
+              this.fetchChartData(param.value, index);
+            }
+          });
         } else {
-          this.drawEmptyChart();
+          // 清空所有图表，并关闭对应loading
+          this.checkedNodes.forEach((param, index) => {
+            const chartKey = this.presetChartKeys[index];
+            this.drawEmptyChart(chartKey);
+            // 强制关闭loading
+            Vue.set(this.loadingMap, param.value, false);
+          });
         }
       },
       immediate: true
     },
+    // 监听勾选数量变化，触发布局更新（可选，确保响应式）
+    checkedCount: {
+      handler() {
+        this.$nextTick(() => {
+          // 窗口resize强制刷新图表尺寸
+          this.handleResize();
+        });
+      }
+    }
   },
   mounted() {
-    // Initialize chart / 初始化图表
-    this.initChart();
+    // 初始化4个固定图表实例（预生成，隐藏状态）
+    this.initPresetCharts();
+    // 监听窗口resize
+    window.addEventListener('resize', this.handleResize);
   },
   beforeDestroy() {
-    // Dispose chart instance and event listeners / 销毁图表实例和事件监听
-    if (this.chart) {
-      this.chart.dispose();
-    }
+    // 销毁4个固定图表实例
+    Object.values(this.chartInstances).forEach(chart => {
+      if (chart && chart.dispose) {
+        chart.dispose();
+      }
+    });
     window.removeEventListener('resize', this.handleResize);
   },
   methods: {
-    // Initialize chart / 初始化图表
-    initChart() {
+    // 初始化4个固定图表
+    initPresetCharts() {
       this.$nextTick(() => {
-        if (this.$refs.chart) {
-          this.chart = echarts.init(this.$refs.chart);
-          // Listen to window resize, adjust chart size / 监听窗口大小变化，调整图表尺寸
-          window.addEventListener('resize', this.handleResize);
-
-          // Initial display / 初始显示
-          if (this.enCoilID) {
-            this.fetchChartData();
+        this.presetChartKeys.forEach(chartKey => {
+          // v-for中的ref返回数组，取第0项（单个DOM元素）
+          const chartDomArr = this.$refs[chartKey];
+          // 严格校验DOM是否存在，避免传入无效值
+          const chartDom = chartDomArr && chartDomArr.length > 0 ? chartDomArr[0] : null;
+          if (chartDom) {
+            // 创建实例并存储
+            this.chartInstances[chartKey] = echarts.init(chartDom);
+            // 初始绘制空图表（隐藏状态，不显示）
+            this.drawEmptyChart(chartKey);
           } else {
-            this.drawEmptyChart();
+            console.warn(`图表${chartKey} DOM元素未找到，初始化失败`);
+          }
+        });
+      });
+    },
+
+    // 处理树形节点勾选（限制最多4个）
+    handleCheckChange() {
+      const checkedNodes = this.$refs.paramTree.getCheckedNodes();
+      const checkedCount = checkedNodes.length;
+
+      // 超过4个时取消最后一个并提示
+      if (checkedCount > this.maxCheckCount) {
+        this.$message.warning(`Please select up to ${this.maxCheckCount} parameters.`);
+        const lastNode = checkedNodes[checkedNodes.length - 1];
+        this.$refs.paramTree.setChecked(lastNode.value, false, false);
+        return;
+      }
+
+      // 先关闭所有旧勾选参数的loading
+      this.checkedNodes.forEach(param => {
+        Vue.set(this.loadingMap, param.value, false);
+      });
+
+      // 更新勾选列表和数量
+      this.checkedNodes = this.$refs.paramTree.getCheckedNodes();
+      this.checkedCount = this.checkedNodes.length;
+
+      // 批量更新图表：仅setOption，不重新创建实例
+      this.checkedNodes.forEach((param, index) => {
+        if (index < this.presetChartKeys.length) {
+          const chartKey = this.presetChartKeys[index];
+          if (this.enCoilID) {
+            this.fetchChartData(param.value, index);
+          } else {
+            this.drawEmptyChart(chartKey);
+            // 确保关闭loading
+            Vue.set(this.loadingMap, param.value, false);
           }
         }
       });
-    },
 
-    // Handle window resize / 处理窗口大小变化
-    handleResize() {
-      if (this.chart) {
-        this.chart.resize();
-      }
-    },
-
-    // Get chart data / 获取图表数据
-    fetchChartData() {
-      if (!this.enCoilID || !this.paramField) {
-        this.drawNoDataChart();
-      }
-      this.loading = true;
-      getSegmentList({
-        enCoilID: this.enCoilID,
-        paramField: this.paramField
-      }).then(res => {
-        // Assume res.data format is [{ segNo: 'timestamp', value: 'value' }] / 假设res.data格式为[{ segNo: '时间戳', value: '数值' }]
-        if (res.data && res.data.length) {
-          this.processChartData(res.data);
-          this.drawLineChart();
-          console.log('Data available, drawing line chart') // 有数据，绘制折线图
-        } else {
-          this.drawNoDataChart();
-          console.log('No data, clearing line chart') // 无数据，清空折线图
+      // 隐藏未用到的图表（已通过display控制，此处可选）
+      for (let i = this.checkedCount; i < this.presetChartKeys.length; i++) {
+        const chartKey = this.presetChartKeys[i];
+        if (this.chartInstances[chartKey] && this.chartInstances[chartKey].clear) {
+          this.chartInstances[chartKey].clear();
+        }
+      }
+    },
+
+    // 获取对应索引图表的加载状态
+    getChartLoading(index) {
+      // 增加兜底校验，避免index越界导致返回undefined（v-loading需要布尔值）
+      if (index >= this.checkedNodes.length || !this.checkedNodes[index]?.value) {
+        return false;
+      }
+      const paramValue = this.checkedNodes[index].value;
+      // 兜底：若loadingMap中无该属性，返回false
+      return this.loadingMap[paramValue] || false;
+    },
+
+    // 获取对应索引图表的标题
+    getChartTitle(index) {
+      if (index >= this.checkedNodes.length) return '';
+      return this.checkedNodes[index].label || '';
+    },
+
+    // 窗口resize调整所有图表尺寸
+    handleResize() {
+      Object.values(this.chartInstances).forEach(chart => {
+        if (chart && chart.resize) {
+          chart.resize();
         }
-      }).catch(err => {
-        console.error('Failed to fetch data:', err); // 获取数据失败
-        this.drawErrorChart();
-      }).finally(_ => {
-        this.loading = false;
       });
     },
 
-    // Process chart data / 处理图表数据
+    // 获取单个参数数据并更新对应图表【核心修复：loading响应式赋值】
+    fetchChartData(paramValue, chartIndex) {
+      // 前置校验：参数无效直接关闭loading并绘制无数据图表
+      if (!this.enCoilID || !paramValue || chartIndex >= this.presetChartKeys.length) {
+        const chartKey = this.presetChartKeys[chartIndex];
+        this.drawNoDataChart(chartKey);
+        // 强制关闭loading
+        Vue.set(this.loadingMap, paramValue, false);
+        return;
+      }
+
+      console.log(`请求参数: enCoilID=${this.enCoilID}, paramField=${paramValue}`);
+
+      // 修复1：使用Vue.set实现响应式赋值，让视图感知状态变化
+      Vue.set(this.loadingMap, paramValue, true);
+
+      getSegmentList({
+        enCoilID: this.enCoilID,
+        paramField: paramValue
+      }).then(res => {
+        const chartKey = this.presetChartKeys[chartIndex];
+        if (res.data && res.data.length > 0) {
+          // 处理数据
+          const { timeStamps, chartData, originalTimeStamps, originalChartData, stat } = this.processChartData(res.data);
+          this.chartDataMap[paramValue] = {
+            timeStamps,
+            chartData,
+            originalTimeStamps,
+            originalChartData
+          };
+          this.statMap[paramValue] = stat;
+          // 仅setOption更新图表，不重新初始化
+          console.log(res)
+          this.drawLineChart(chartKey, paramValue);
+        } else {
+          this.drawNoDataChart(chartKey);
+        }
+      }).catch(err => {
+        console.error(`获取${paramValue}数据失败:`, err);
+        const chartKey = this.presetChartKeys[chartIndex];
+        this.drawErrorChart(chartKey);
+      }).finally(() => {
+        console.log(`完成${paramValue}数据获取, loading关闭`);
+        // 修复2：finally中同样使用Vue.set，确保无论成功失败都关闭loading
+        Vue.set(this.loadingMap, paramValue, false);
+      });
+    },
+
+    // 处理图表数据
     processChartData(rawData) {
-      // Sort data (by segNo, assume it's timestamp or sequence number) / 排序数据（按segNo，假设是时间戳或序号）
       rawData.sort((a, b) => a.segNo - b.segNo);
+      const originalTimeStamps = rawData.map(item => item.segNo);
+      const originalChartData = rawData.map(item => parseFloat(item.value));
 
-      // Save original data / 保存原始数据
-      this.originalTimeStamps = rawData.map(item => item.segNo);
-      this.originalChartData = rawData.map(item => parseFloat(item.value));
+      let timeStamps = originalTimeStamps;
+      let chartData = originalChartData;
 
-      // Decide whether to sample based on data volume / 根据数据量决定是否采样
+      // 可选：数据采样逻辑
       // if (rawData.length > this.maxXAxisLabels) {
-      //   // Data sampling - uniform sampling / 数据采样 - 均匀采样
-      //   this.sampleData(rawData);
-      // } else {
-        // Data volume is moderate, use all data directly / 数据量适中，直接使用全部数据
-        this.timeStamps = this.originalTimeStamps;
-        this.chartData = this.originalChartData;
+      //   const sampleInterval = Math.ceil(rawData.length / this.maxXAxisLabels);
+      //   timeStamps = [];
+      //   chartData = [];
+      //   for (let i = 0; i < rawData.length; i += sampleInterval) {
+      //     timeStamps.push(rawData[i].segNo);
+      //     chartData.push(parseFloat(rawData[i].value));
+      //   }
+      //   if (timeStamps[timeStamps.length - 1] !== rawData[rawData.length - 1].segNo) {
+      //     timeStamps.push(rawData[rawData.length - 1].segNo);
+      //     chartData.push(parseFloat(rawData[rawData.length - 1].value));
+      //   }
       // }
 
-      // Calculate statistics (based on original data) / 计算统计值（基于原始数据）
-      if (this.originalChartData.length) {
-        this.latestValue = this.originalChartData[this.originalChartData.length - 1];
-        this.maxValue = Math.max(...this.originalChartData);
-        this.minValue = Math.min(...this.originalChartData);
-        this.avgValue = this.originalChartData.reduce((sum, val) => sum + val, 0) / this.originalChartData.length;
+      let stat = { latestValue: 0, maxValue: 0, minValue: 0, avgValue: 0 };
+      if (originalChartData.length) {
+        stat.latestValue = originalChartData[originalChartData.length - 1];
+        stat.maxValue = Math.max(...originalChartData);
+        stat.minValue = Math.min(...originalChartData);
+        stat.avgValue = originalChartData.reduce((sum, val) => sum + val, 0) / originalChartData.length;
       }
+
+      return { timeStamps, chartData, originalTimeStamps, originalChartData, stat };
     },
 
-    // Data sampling method / 数据采样方法
-    sampleData(rawData) {
-      const total = rawData.length;
-      const sampleInterval = Math.ceil(total / this.maxXAxisLabels);
-
-      // Initialize sampling array / 初始化采样数组
-      this.timeStamps = [];
-      this.chartData = [];
-
-      // Uniform sampling / 均匀采样
-      for (let i = 0; i < total; i += sampleInterval) {
-        this.timeStamps.push(rawData[i].segNo);
-        this.chartData.push(parseFloat(rawData[i].value));
-      }
-
-      // Ensure the last data point is included / 确保最后一个数据点被包含
-      if (this.timeStamps[this.timeStamps.length - 1] !== rawData[total - 1].segNo) {
-        this.timeStamps.push(rawData[total - 1].segNo);
-        this.chartData.push(parseFloat(rawData[total - 1].value));
-      }
-    },
-
-    // Draw line chart / 绘制折线图
-    drawLineChart() {
-      if (!this.chart) return;
-
-      // Clear old layers to avoid "No data" residue / 清理旧图层，避免"暂无数据"残留
-      this.chart.clear();
+    // 绘制折线图（仅setOption）
+    drawLineChart(chartKey, paramValue) {
+      const chart = this.chartInstances[chartKey];
+      const chartDataObj = this.chartDataMap[paramValue];
+      const stat = this.statMap[paramValue];
+      const param = this.paramFields.find(item => item.value === paramValue);
+      if (!chart || !chartDataObj) return;
 
       const option = {
         backgroundColor: 'transparent',
-        graphic: [], // 清除占位/无数据图层
+        graphic: [],
         tooltip: {
           trigger: 'axis',
-          axisPointer: {
-            type: 'line'
-          },
+          axisPointer: { type: 'line' },
           backgroundColor: 'rgba(255, 255, 255, 0.95)',
           borderColor: '#d4d4d4',
           borderWidth: 1,
-          textStyle: {
-            color: '#333'
-          },
+          textStyle: { color: '#333' },
           formatter: (params) => {
-            const param = params[0];
+            const paramItem = params[0];
             return `
-              Sequence: ${param.name}<br>
-              <!-- 序号 -->
-              Value: ${param.value.toFixed(2)}<br>
-              <!-- 值 -->
-              Unit: ${this.getParamUnit()}
-              <!-- 单位 -->
+              Sequence: ${paramItem.name}<br>
+              Value: ${paramItem.value.toFixed(2)}<br>
+              Unit: ${this.getParamUnit(paramValue)}
             `;
           }
         },
         grid: {
           left: '3%',
           right: '4%',
-          bottom: '10%', // Increase bottom space to prevent label truncation / 增加底部空间，防止标签被截断
+          bottom: '10%',
           top: '15%',
           containLabel: true
         },
         xAxis: {
           type: 'category',
           boundaryGap: false,
-          // data: this.timeStamps,
-          // axisLine: {
-          //   lineStyle: {
-          //     color: '#d4d4d4'
-          //   }
-          // },
-          // axisLabel: {
-          //   color: '#666',
-          //   rotate: 45,
-          //   // 动态计算标签显示间隔
-          //   interval: (index, value) => {
-          //     // 如果数据量大于maxXAxisLabels，按采样后的间隔显示
-          //     return index % Math.max(1, Math.ceil(this.timeStamps.length / this.maxXAxisLabels)) === 0;
-          //   }
-          // },
-          splitLine: {
-            show: false
-          }
+          data: chartDataObj.timeStamps,
+          axisLine: { lineStyle: { color: '#d4d4d4' } },
+          axisLabel: {
+            color: '#666',
+            rotate: 45,
+            interval: (index) => {
+              return index % Math.max(1, Math.ceil(chartDataObj.timeStamps.length / this.maxXAxisLabels)) === 0;
+            }
+          },
+          splitLine: { show: false }
         },
         yAxis: {
           type: 'value',
-          name: this.getParamUnit(),
+          name: this.getParamUnit(paramValue),
           nameLocation: 'middle',
           nameGap: 30,
-          nameTextStyle: {
-            color: '#666'
-          },
-          axisLine: {
-            lineStyle: {
-              color: '#d4d4d4'
-            }
-          },
-          axisLabel: {
-            color: '#666'
-          },
+          nameTextStyle: { color: '#666' },
+          axisLine: { lineStyle: { color: '#d4d4d4' } },
+          axisLabel: { color: '#666' },
           splitLine: {
-            lineStyle: {
-              color: '#e8e8e8',
-              type: 'dashed'
-            }
+            lineStyle: { color: '#e8e8e8', type: 'dashed' }
           }
         },
         series: [
           {
-            name: this.getParamLabel(),
+            name: param?.label || paramValue,
             type: 'line',
-            data: this.chartData,
+            data: chartDataObj.chartData,
             smooth: true,
             symbol: 'circle',
             symbolSize: 4,
-            lineStyle: {
-              color: '#666',
-              width: 2
-            },
-            itemStyle: {
-              color: '#999'
-            },
+            lineStyle: { color: '#666', width: 2 },
+            itemStyle: { color: '#999' },
             areaStyle: {
               color: {
                 type: 'linear',
@@ -310,39 +395,26 @@ export default {
               }
             },
             markPoint: {
-              data: [
-                { type: 'max', name: 'Max' }, // 最大值
-                { type: 'min', name: 'Min' } // 最小值
-              ],
-              itemStyle: {
-                color: '#999'
-              },
-              label: {
-                color: '#333'
-              }
+              data: [{ type: 'max', name: 'Max' }, { type: 'min', name: 'Min' }],
+              itemStyle: { color: '#999' },
+              label: { color: '#333' }
             },
             markLine: {
-              data: [
-                { type: 'average', name: 'Average' } // 平均值
-              ],
-              lineStyle: {
-                color: '#999',
-                type: 'dashed'
-              },
-              label: {
-                color: '#333'
-              }
+              data: [{ type: 'average', name: 'Average' }],
+              lineStyle: { color: '#999', type: 'dashed' },
+              label: { color: '#333' }
             }
           }
         ]
       };
 
-      this.chart.setOption(option, true);
+      chart.setOption(option, true);
     },
 
-    // Draw empty chart (no performance selected) / 绘制空图表（未选择实绩）
-    drawEmptyChart() {
-      if (!this.chart) return;
+    // 绘制空图表
+    drawEmptyChart(chartKey) {
+      const chart = this.chartInstances[chartKey];
+      if (!chart) return;
 
       const option = {
         graphic: {
@@ -352,7 +424,7 @@ export default {
               left: 'center',
               top: 'center',
               style: {
-                text: 'Please select performance', // 请选择实绩
+                text: 'Please select performance',
                 fontSize: 16,
                 fontWeight: 'bold',
                 fill: '#999'
@@ -360,25 +432,18 @@ export default {
             }
           ]
         },
-        xAxis: {
-          type: 'category',
-          data: []
-        },
-        yAxis: {
-          type: 'value'
-        },
+        xAxis: { type: 'category', data: [] },
+        yAxis: { type: 'value' },
         series: []
       };
 
-      this.chart.setOption(option);
+      chart.setOption(option);
     },
 
-    // Draw no data chart / 绘制无数据图表
-    drawNoDataChart() {
-      if (!this.chart) return;
-
-      // Clear original chart content first / 先清除原有图表内容
-      this.chart.clear();
+    // 绘制无数据图表
+    drawNoDataChart(chartKey) {
+      const chart = this.chartInstances[chartKey];
+      if (!chart) return;
 
       const option = {
         graphic: {
@@ -388,7 +453,7 @@ export default {
               left: 'center',
               top: 'center',
               style: {
-                text: 'No data', // 暂无数据
+                text: 'No data',
                 fontSize: 16,
                 fontWeight: 'bold',
                 fill: '#999'
@@ -396,22 +461,18 @@ export default {
             }
           ]
         },
-        xAxis: {
-          type: 'category',
-          data: []
-        },
-        yAxis: {
-          type: 'value'
-        },
+        xAxis: { type: 'category', data: [] },
+        yAxis: { type: 'value' },
         series: []
       };
 
-      this.chart.setOption(option);
+      chart.setOption(option);
     },
 
-    // Draw error chart / 绘制错误图表
-    drawErrorChart() {
-      if (!this.chart) return;
+    // 绘制错误图表
+    drawErrorChart(chartKey) {
+      const chart = this.chartInstances[chartKey];
+      if (!chart) return;
 
       const option = {
         graphic: {
@@ -421,7 +482,7 @@ export default {
               left: 'center',
               top: 'center',
               style: {
-                text: 'Data loading failed', // 数据加载失败
+                text: 'Data loading failed',
                 fontSize: 16,
                 fontWeight: 'bold',
                 fill: '#f56c6c'
@@ -429,53 +490,31 @@ export default {
             }
           ]
         },
-        xAxis: {
-          type: 'category',
-          data: []
-        },
-        yAxis: {
-          type: 'value'
-        },
+        xAxis: { type: 'category', data: [] },
+        yAxis: { type: 'value' },
         series: []
       };
 
-      this.chart.setOption(option);
+      chart.setOption(option);
     },
 
-    // Handle parameter change / 处理参数变更
-    handleParamChange() {
-      // Clear existing data / 清空现有数据
-      this.chartData = [];
-      this.timeStamps = [];
-      this.originalTimeStamps = [];
-      this.originalChartData = [];
-
-      // Re-fetch data / 重新获取数据
-      if (this.enCoilID) {
-        this.fetchChartData();
-      }
-    },
-
-    // Get parameter label / 获取参数标签
-    getParamLabel() {
-      const param = this.paramFields.find(item => item.value === this.paramField);
-      return param ? param.label : this.paramField;
-    },
-
-    // Get parameter unit / 获取参数单位
-    getParamUnit() {
-      // Return different units based on different parameters / 根据不同参数返回不同单位
-      switch (this.paramField) {
+    // 获取参数单位
+    getParamUnit(paramValue) {
+      switch (paramValue) {
         case 'stripSpeed':
+        case 'stripSpeedTmExit':
           return 'm/s';
         case 'tensionPorBr1':
         case 'tensionPorBr2':
+        case 'tensionBr5Tm':
+        case 'tensionTlBr7':
           return 'N';
         case 'cleaningVoltage':
           return 'V';
         case 'cleaningCurrent':
           return 'A';
         case 'alkaliConcentration':
+        case 'tlElongation':
           return '%';
         case 'alkaliTemperature':
         case 'phfExitStripTemp':
@@ -489,13 +528,6 @@ export default {
           return 'kW';
         case 'gasConsumption':
           return 'm³/h';
-        case 'tensionBr5Tm':
-        case 'tensionTlBr7':
-          return 'N';
-        case 'stripSpeedTmExit':
-          return 'm/s';
-        case 'tlElongation':
-          return '%';
         default:
           return '';
       }
@@ -506,33 +538,88 @@ export default {
 
 <style lang="scss" scoped>
 .monitoring-container {
-  height: 100%;
+  height: 100%; /* 根容器高度100%，可根据父容器调整为100% */
   box-sizing: border-box;
 }
 
-.chart-wrapper {
-  position: relative;
+.charts-container {
   width: 100%;
   height: 100%;
-  display: flex;
-  flex-direction: column;
+  position: relative;
+  box-sizing: border-box;
 }
 
-.param-select {
-  position: absolute;
-  top: 10px;
-  right: 10px;
-  z-index: 10;
-  width: 150px;
+/* 1个勾选：占满所有空间 */
+.count-1 {
+  display: flex;
+  flex-direction: column;
 
-  ::v-deep .el-input__inner {
-    border-color: #d4d4d4;
+  .preset-chart-item {
+    width: 100%;
+    height: 100%;
+    box-sizing: border-box;
   }
 }
 
+/* 2个勾选：纵向排布，横向占满，上下各50% */
+.count-2 {
+  display: flex;
+  flex-direction: column;
+  gap: 10px; /* 上下图表间距 */
+
+  .preset-chart-item {
+    width: 100%;
+    height: calc(50% - 5px); /* 减去间距的一半，保证总高度100% */
+    box-sizing: border-box;
+  }
+}
+
+/* 3个/4个勾选：2*2格子布局 */
+.count-3,
+.count-4 {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 10px; /* 图表间距 */
+
+  .preset-chart-item {
+    width: calc(50% - 5px); /* 横向两列，减去间距的一半 */
+    height: calc(50% - 5px); /* 纵向两行，减去间距的一半 */
+    box-sizing: border-box;
+  }
+}
+
+/* 图表项通用样式 */
+.preset-chart-item {
+  position: relative;
+  border: 1px solid #e8e8e8;
+  border-radius: 8px;
+  padding: 10px;
+  box-sizing: border-box;
+}
+
+.chart-title {
+  font-size: 14px;
+  font-weight: 500;
+  color: #333;
+  margin-bottom: 8px;
+  text-align: center;
+}
+
 .chart-content {
   width: 100%;
-  flex: 1;
-  min-height: 0;
+  height: calc(100% - 24px); /* 减去标题高度 */
+  box-sizing: border-box;
+  min-height: 180px; /* 兜底高度，确保ECharts初始化有尺寸 */
+}
+
+/* 无勾选提示 */
+.no-param-tip {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 18px;
+  color: #999;
 }
 </style>
\ No newline at end of file
diff --git a/src/views/l2/pdo/index.vue b/src/views/l2/pdo/index.vue
index b0baa0e..e9a20ed 100644
--- a/src/views/l2/pdo/index.vue
+++ b/src/views/l2/pdo/index.vue
@@ -10,14 +10,14 @@
         </el-form-item>
         <el-form-item label="Start Date" prop="startDate">
           <!-- 开始日期 -->
-          <el-date-picker v-model="queryForm.startDate" type="date" placeholder="Select start date" value-format="yyyy-MM-dd"
-            clearable></el-date-picker>
+          <el-date-picker v-model="queryForm.startDate" type="date" placeholder="Select start date"
+            value-format="yyyy-MM-dd" clearable></el-date-picker>
           <!-- 选择开始日期 -->
         </el-form-item>
         <el-form-item label="End Date" prop="endDate">
           <!-- 结束日期 -->
-          <el-date-picker v-model="queryForm.endDate" type="date" placeholder="Select end date" value-format="yyyy-MM-dd"
-            clearable></el-date-picker>
+          <el-date-picker v-model="queryForm.endDate" type="date" placeholder="Select end date"
+            value-format="yyyy-MM-dd" clearable></el-date-picker>
           <!-- 选择结束日期 -->
         </el-form-item>
         <el-form-item>
@@ -33,122 +33,48 @@
 
     <!-- Card grid layout / 卡片网格布局 -->
     <div v-loading="tableLoading" class="card-grid-container">
-      <el-row :gutter="10">
-        <el-col v-for="(item, index) in tableData" :key="index" :xs="24" :sm="12" :md="8" :lg="6" :xl="5"
-          class="card-col">
-          <el-card class="parameter-card" shadow="never" :body-style="{ padding: '8px' }"
-            :class="{ 'card-selected': currentRow.exitMatId === item.exitMatId }" @click.native="handleRowClick(item)">
-            <div slot="header" class="card-header">
-              <div class="card-title">Finished Coil: {{ item.exitMatId || '-' }}</div>
-              <!-- 成品卷 -->
-              <div class="card-subtitle">{{ item.entryMatId || '-' }} | {{ item.planNo || '-' }}</div>
-            </div>
-            <div class="card-body">
-              <div class="param-groups-row">
-                <!-- Basic info / 基本信息 -->
-                <div class="param-group">
-                  <div class="group-title">Basic Info</div>
-                  <!-- 基本信息 -->
-                  <div class="param-list">
-                    <div class="param-line">
-                      <span class="param-label">Status:</span>
-                      <!-- 状态 -->
-                      <span class="param-value">{{ item.status || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Steel Grade:</span>
-                      <!-- 钢种 -->
-                      <span class="param-value">{{ item.steelGrade || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Product Type:</span>
-                      <!-- 产品类型 -->
-                      <span class="param-value">{{ item.prodCode || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Customer:</span>
-                      <!-- 客户 -->
-                      <span class="param-value">{{ item.customer || '-' }}</span>
-                    </div>
-                  </div>
-                </div>
+      <el-table :data="tableData" style="width: 100%" border stripe @row-click="handleRowClick">
+        <el-table-column prop="exitMatId" label="exitMat"></el-table-column>
+        <el-table-column prop="entryMatId" label="entryMat"></el-table-column>
+        <el-table-column prop="planNo" label="PlanNo"></el-table-column>
 
-                <!-- Entry material info / 来料信息 -->
-                <div class="param-group">
-                  <div class="group-title">Entry Material Info</div>
-                  <!-- 来料信息 -->
-                  <div class="param-list">
-                    <div class="param-line">
-                      <span class="param-label">Thickness:</span>
-                      <!-- 厚度 -->
-                      <span class="param-value">{{ item.entryThick || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Width:</span>
-                      <!-- 宽度 -->
-                      <span class="param-value">{{ item.entryWidth || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Length:</span>
-                      <!-- 长度 -->
-                      <span class="param-value">{{ item.entryLength || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Weight:</span>
-                      <!-- 重量 -->
-                      <span class="param-value">{{ item.entryWeight || '-' }}</span>
-                    </div>
-                  </div>
-                </div>
+        <el-table-column prop="status" label="Status"></el-table-column>
+        <el-table-column prop="steelGrade" label="SteelGrade"></el-table-column>
+        <el-table-column prop="prodCode" label="ProductType"></el-table-column>
+        <el-table-column prop="customer" label="Customer"></el-table-column>
 
-                <!-- Finished product info / 成品信息 -->
-                <div class="param-group">
-                  <div class="group-title">Finished Product Info</div>
-                  <!-- 成品信息 -->
-                  <div class="param-list">
-                    <div class="param-line">
-                      <span class="param-label">Thickness:</span>
-                      <!-- 厚度 -->
-                      <span class="param-value">{{ item.exitThickness || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Width:</span>
-                      <!-- 宽度 -->
-                      <span class="param-value">{{ item.exitWidth || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Length:</span>
-                      <!-- 长度 -->
-                      <span class="param-value">{{ item.exitLength || '-' }}</span>
-                    </div>
-                    <div class="param-line">
-                      <span class="param-label">Weight:</span>
-                      <!-- 重量 -->
-                      <span class="param-value">{{ item.exitNetWeight || '-' }}</span>
-                    </div>
-                  </div>
-                </div>
-              </div>
-            </div>
-            <div class="card-footer">
-              <el-button size="mini" type="text" icon="el-icon-view" @click.stop="handlePrint(item)">Print</el-button>
-              <!-- 打印 -->
-              <el-button size="mini" type="text" icon="el-icon-edit" @click.stop="handleEdit(item)">Edit</el-button>
-              <!-- 操作 -->
-              <el-button size="mini" type="text" icon="el-icon-document" @click.stop="handleQualityCertificate(item)">Quality Certificate</el-button>
-              <!-- 质保书 -->
-              <el-button size="mini" type="text" icon="el-icon-delete" :loading="item.deleteLoading"
-                @click.stop="handleDelete(item)">Delete</el-button>
-              <!-- 删除 -->
-            </div>
-          </el-card>
-        </el-col>
-      </el-row>
+        <el-table-column prop="entryThick" label="EntryThickness"></el-table-column>
+        <el-table-column prop="entryWidth" label="EntryWidth"></el-table-column>
+        <el-table-column prop="entryLength" label="EntryLength"></el-table-column>
+        <el-table-column prop="entryWeight" label="EntryWeight"></el-table-column>
+
+        <el-table-column prop="exitThickness" label="ExitThickness"></el-table-column>
+        <el-table-column prop="exitWidth" label="ExitWidth"></el-table-column>
+        <el-table-column prop="exitLength" label="ExitLength"></el-table-column>
+        <el-table-column prop="exitNetWeight" label="ExitNetWeight"></el-table-column>
+
+        <el-table-column label="Operation">
+          <template slot-scope="scope">
+            <el-button size="mini" type="text" icon="el-icon-view"
+              @click.stop="handlePrint(scope.row)">Print</el-button>
+            <!-- 打印 -->
+            <el-button size="mini" type="text" icon="el-icon-edit" @click.stop="handleEdit(scope.row)">Edit</el-button>
+            <!-- 操作 -->
+            <el-button size="mini" type="text" icon="el-icon-document"
+              @click.stop="handleQualityCertificate(scope.row)">Quality Certificate</el-button>
+            <!-- 质保书 -->
+            <el-button size="mini" type="text" icon="el-icon-delete" :loading="scope.row.deleteLoading"
+              @click.stop="handleDelete(scope.row)">Delete</el-button>
+            <!-- 删除 -->
+          </template>
+        </el-table-column>
+      </el-table>
       <div v-if="tableData.length === 0 && !tableLoading" class="empty-data">
         <el-empty description="No data"></el-empty>
         <!-- 暂无数据 -->
       </div>
     </div>
+    <pdo-summary :table-data="tableData" />
 
     <!-- Statistics summary and chart area / 统计汇总和图表区域 -->
     <div class="statistics-container">
@@ -169,18 +95,9 @@
         </div>
       </div>
       <el-row :gutter="15" class="statistics-content">
-        <el-col :span="4" class="summary-col">
-          <div class="summary-wrapper">
-            <div class="summary-header">Statistics Summary</div>
-            <!-- 统计汇总 -->
-            <pdo-summary :table-data="tableData" />
-          </div>
-        </el-col>
-        <el-col :span="20" class="chart-col">
-          <div class="chart-wrapper">
-            <line-chart :enCoilID="currentRow.entryMatId" />
-          </div>
-        </el-col>
+        <div class="chart-wrapper">
+          <line-chart :enCoilID="currentRow.entryMatId" />
+        </div>
       </el-row>
     </div>
 
@@ -194,15 +111,15 @@
 
       <!-- Edit: keep original tab, show data correction + label print / 编辑：保留原有tab，显示数据修正+标签打印 -->
       <!-- <el-tabs v-else v-model="activeTab"> -->
-        <!-- <el-tab-pane label="Data Correction" name="basicInfo"> -->
-        <!-- 数据修正 -->
-          <pdo-data-correction :detail="formData" :save-callback="handleSave"
-            :save-loading="saveLoading"></pdo-data-correction>
-        <!-- </el-tab-pane> -->
-        <!-- <el-tab-pane label="Label Print" name="labelPrint"> -->
-        <!-- 标签打印 -->
-          
-        <!-- </el-tab-pane>
+      <!-- <el-tab-pane label="Data Correction" name="basicInfo"> -->
+      <!-- 数据修正 -->
+      <pdo-data-correction :detail="formData" :save-callback="handleSave"
+        :save-loading="saveLoading"></pdo-data-correction>
+      <!-- </el-tab-pane> -->
+      <!-- <el-tab-pane label="Label Print" name="labelPrint"> -->
+      <!-- 标签打印 -->
+
+      <!-- </el-tab-pane>
       </el-tabs> -->
     </el-dialog>
 
@@ -393,16 +310,13 @@ export default {
 }
 
 .pdo-header {
-  background: #ffffff;
-  border: 1px solid #d4d4d4;
   border-radius: 2px;
-  padding: 15px;
-  margin-bottom: 15px;
+  margin-bottom: 10px;
   flex-shrink: 0;
 }
 
 .card-grid-container {
-  flex: 1;
+  flex: 3;
   min-height: 0;
   overflow-y: auto;
   padding-right: 5px;
@@ -552,7 +466,7 @@ export default {
   padding: 0;
   display: flex;
   flex-direction: column;
-  height: 280px;
+  height: 400px;
 }
 
 .statistics-header {
@@ -601,7 +515,7 @@ export default {
 }
 
 .statistics-content {
-  flex: 1;
+  flex: 5;
   min-height: 0;
   padding: 12px 15px;
 }