diff --git a/klp-cost/src/main/java/com/klp/cost/domain/CostItem.java b/klp-cost/src/main/java/com/klp/cost/domain/CostItem.java
index fcbc32c0f..73c6541ec 100644
--- a/klp-cost/src/main/java/com/klp/cost/domain/CostItem.java
+++ b/klp-cost/src/main/java/com/klp/cost/domain/CostItem.java
@@ -48,6 +48,8 @@ public class CostItem extends BaseEntity {
      * 查询条件（JSON格式）
      */
     private String queryCondition;
+
+    private Long productionLineId;
     /**
      * 删除标识 0=正常 2=删除
      */
diff --git a/klp-cost/src/main/java/com/klp/cost/domain/WmsProductionLineSimple.java b/klp-cost/src/main/java/com/klp/cost/domain/WmsProductionLineSimple.java
new file mode 100644
index 000000000..1be2c80ff
--- /dev/null
+++ b/klp-cost/src/main/java/com/klp/cost/domain/WmsProductionLineSimple.java
@@ -0,0 +1,16 @@
+package com.klp.cost.domain;
+
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+@Data
+@TableName("wms_production_line")
+public class WmsProductionLineSimple {
+
+    @TableId(value = "line_id")
+    private Long lineId;
+
+    private String lineName;
+}
+
diff --git a/klp-cost/src/main/java/com/klp/cost/domain/bo/CostItemBo.java b/klp-cost/src/main/java/com/klp/cost/domain/bo/CostItemBo.java
index 25d1cf3b2..866dc5df4 100644
--- a/klp-cost/src/main/java/com/klp/cost/domain/bo/CostItemBo.java
+++ b/klp-cost/src/main/java/com/klp/cost/domain/bo/CostItemBo.java
@@ -52,5 +52,7 @@ public class CostItemBo extends BaseEntity {
      */
     private String queryCondition;
 
+    private Long productionLineId;
+
 
 }
diff --git a/klp-cost/src/main/java/com/klp/cost/domain/vo/CostItemVo.java b/klp-cost/src/main/java/com/klp/cost/domain/vo/CostItemVo.java
index d7aa837ed..9d2dd322b 100644
--- a/klp-cost/src/main/java/com/klp/cost/domain/vo/CostItemVo.java
+++ b/klp-cost/src/main/java/com/klp/cost/domain/vo/CostItemVo.java
@@ -61,5 +61,10 @@ public class CostItemVo {
     @ExcelProperty(value = "查询条件（JSON格式）")
     private String queryCondition;
 
+    @ExcelProperty(value = "产线ID")
+    private Long productionLineId;
+
+    @ExcelProperty(value = "产线")
+    private String productionLineName;
 
 }
diff --git a/klp-cost/src/main/java/com/klp/cost/service/impl/CostItemServiceImpl.java b/klp-cost/src/main/java/com/klp/cost/service/impl/CostItemServiceImpl.java
index ff2bb8d42..e462a6089 100644
--- a/klp-cost/src/main/java/com/klp/cost/service/impl/CostItemServiceImpl.java
+++ b/klp-cost/src/main/java/com/klp/cost/service/impl/CostItemServiceImpl.java
@@ -1,23 +1,28 @@
 package com.klp.cost.service.impl;
 
 import cn.hutool.core.bean.BeanUtil;
+import cn.hutool.core.collection.CollUtil;
 import com.klp.common.core.page.TableDataInfo;
 import com.klp.common.core.domain.PageQuery;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
+import com.baomidou.mybatisplus.extension.toolkit.Db;
 import com.klp.common.utils.StringUtils;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import com.klp.cost.domain.bo.CostItemBo;
 import com.klp.cost.domain.vo.CostItemVo;
 import com.klp.cost.domain.CostItem;
+import com.klp.cost.domain.WmsProductionLineSimple;
 import com.klp.cost.mapper.CostItemMapper;
 import com.klp.cost.service.ICostItemService;
 
 import java.util.List;
 import java.util.Map;
 import java.util.Collection;
+import java.util.Objects;
+import java.util.stream.Collectors;
 
 /**
  * 成本项目配置Service业务层处理
@@ -36,7 +41,11 @@ public class CostItemServiceImpl implements ICostItemService {
      */
     @Override
     public CostItemVo queryById(Long itemId){
-        return baseMapper.selectVoById(itemId);
+        CostItemVo vo = baseMapper.selectVoById(itemId);
+        if (vo != null) {
+            fillProductionLineName(CollUtil.newArrayList(vo));
+        }
+        return vo;
     }
 
     /**
@@ -46,6 +55,7 @@ public class CostItemServiceImpl implements ICostItemService {
     public TableDataInfo<CostItemVo> queryPageList(CostItemBo bo, PageQuery pageQuery) {
         LambdaQueryWrapper<CostItem> lqw = buildQueryWrapper(bo);
         Page<CostItemVo> result = baseMapper.selectVoPage(pageQuery.build(), lqw);
+        fillProductionLineName(result.getRecords());
         return TableDataInfo.build(result);
     }
 
@@ -55,7 +65,9 @@ public class CostItemServiceImpl implements ICostItemService {
     @Override
     public List<CostItemVo> queryList(CostItemBo bo) {
         LambdaQueryWrapper<CostItem> lqw = buildQueryWrapper(bo);
-        return baseMapper.selectVoList(lqw);
+        List<CostItemVo> list = baseMapper.selectVoList(lqw);
+        fillProductionLineName(list);
+        return list;
     }
 
     private LambdaQueryWrapper<CostItem> buildQueryWrapper(CostItemBo bo) {
@@ -66,9 +78,32 @@ public class CostItemServiceImpl implements ICostItemService {
         lqw.eq(StringUtils.isNotBlank(bo.getCategory()), CostItem::getCategory, bo.getCategory());
         lqw.eq(StringUtils.isNotBlank(bo.getUnit()), CostItem::getUnit, bo.getUnit());
         lqw.eq(StringUtils.isNotBlank(bo.getQueryCondition()), CostItem::getQueryCondition, bo.getQueryCondition());
+        lqw.eq(bo.getProductionLineId() != null, CostItem::getProductionLineId, bo.getProductionLineId());
         return lqw;
     }
 
+    private void fillProductionLineName(List<CostItemVo> voList) {
+        if (CollUtil.isEmpty(voList)) {
+            return;
+        }
+        List<Long> lineIds = voList.stream()
+            .map(CostItemVo::getProductionLineId)
+            .filter(Objects::nonNull)
+            .distinct()
+            .collect(Collectors.toList());
+        if (CollUtil.isEmpty(lineIds)) {
+            return;
+        }
+        Map<Long, String> lineNameMap = Db.lambdaQuery(WmsProductionLineSimple.class)
+            .in(WmsProductionLineSimple::getLineId, lineIds)
+            .select(WmsProductionLineSimple::getLineId, WmsProductionLineSimple::getLineName)
+            .list()
+            .stream()
+            .collect(Collectors.toMap(WmsProductionLineSimple::getLineId, WmsProductionLineSimple::getLineName, (a, b) -> a));
+
+        voList.forEach(v -> v.setProductionLineName(lineNameMap.get(v.getProductionLineId())));
+    }
+
     /**
      * 新增成本项目配置
      */
diff --git a/klp-cost/src/main/resources/mapper/cost/CostItemMapper.xml b/klp-cost/src/main/resources/mapper/cost/CostItemMapper.xml
index c2b63d286..a3d8070e7 100644
--- a/klp-cost/src/main/resources/mapper/cost/CostItemMapper.xml
+++ b/klp-cost/src/main/resources/mapper/cost/CostItemMapper.xml
@@ -12,6 +12,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="unit" column="unit"/>
         <result property="remark" column="remark"/>
         <result property="queryCondition" column="query_condition"/>
+        <result property="productionLineId" column="production_line_id"/>
         <result property="delFlag" column="del_flag"/>
         <result property="createBy" column="create_by"/>
         <result property="createTime" column="create_time"/>
diff --git a/klp-ui/src/views/cost/item.vue b/klp-ui/src/views/cost/item.vue
index aacacbad1..275123cf6 100644
--- a/klp-ui/src/views/cost/item.vue
+++ b/klp-ui/src/views/cost/item.vue
@@ -42,6 +42,17 @@
           @keyup.enter.native="handleQuery"
         />
       </el-form-item>
+      <el-form-item label="产线" prop="productionLineId">
+        <el-select
+          v-model="queryParams.productionLineId"
+          placeholder="请选择产线"
+          clearable
+          filterable
+          @change="handleQuery"
+        >
+          <el-option v-for="l in lineOptions" :key="l.lineId" :label="l.lineName" :value="l.lineId" />
+        </el-select>
+      </el-form-item>
       <el-form-item label="查询条件" prop="queryCondition">
         <el-input
           v-model="queryParams.queryCondition"
@@ -105,6 +116,7 @@
       <el-table-column label="成本项目名称" align="center" prop="itemName" />
       <el-table-column label="成本分类" align="center" prop="category" />
       <el-table-column label="计量单位" align="center" prop="unit" />
+      <el-table-column label="产线" align="center" prop="productionLineName" />
       <el-table-column label="备注" align="center" prop="remark" />
       <el-table-column label="查询条件" align="center" prop="queryCondition" />
       <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
@@ -157,6 +169,11 @@
         <el-form-item label="计量单位" prop="unit">
           <el-input v-model="form.unit" placeholder="请输入计量单位" />
         </el-form-item>
+        <el-form-item label="产线" prop="productionLineId">
+          <el-select v-model="form.productionLineId" placeholder="请选择产线" clearable filterable style="width:100%">
+            <el-option v-for="l in lineOptions" :key="l.lineId" :label="l.lineName" :value="l.lineId" />
+          </el-select>
+        </el-form-item>
         <el-form-item label="备注" prop="remark">
           <el-input v-model="form.remark" placeholder="请输入备注" />
         </el-form-item>
@@ -174,6 +191,7 @@
 
 <script>
 import { listItem, getItem, delItem, addItem, updateItem } from "@/api/cost/item";
+import { listProductionLine } from "@/api/wms/productionLine";
 
 export default {
   name: "Item",
@@ -195,6 +213,7 @@ export default {
       total: 0,
       // 成本项目配置表格数据
       itemList: [],
+      lineOptions: [],
       // 弹出层标题
       title: "",
       // 是否显示弹出层
@@ -207,6 +226,7 @@ export default {
         itemName: undefined,
         category: undefined,
         unit: undefined,
+        productionLineId: undefined,
         queryCondition: undefined,
       },
       // 表单参数
@@ -217,9 +237,15 @@ export default {
     };
   },
   created() {
+    this.loadLines();
     this.getList();
   },
   methods: {
+    loadLines() {
+      listProductionLine({ pageSize: 9999 }).then(res => {
+        this.lineOptions = res.rows || [];
+      });
+    },
     /** 查询成本项目配置列表 */
     getList() {
       this.loading = true;
@@ -242,6 +268,7 @@ export default {
         itemName: undefined,
         category: undefined,
         unit: undefined,
+        productionLineId: undefined,
         remark: undefined,
         queryCondition: undefined,
         delFlag: undefined,
diff --git a/script/sql/mysql/update/update_20260710_cost_item_production_line_id.sql b/script/sql/mysql/update/update_20260710_cost_item_production_line_id.sql
new file mode 100644
index 000000000..3fe90b593
--- /dev/null
+++ b/script/sql/mysql/update/update_20260710_cost_item_production_line_id.sql
@@ -0,0 +1,5 @@
+ALTER TABLE `cost_item`
+    ADD COLUMN `production_line_id` bigint NULL COMMENT '产线ID' AFTER `query_condition`;
+
+CREATE INDEX `idx_cost_item_production_line_id` ON `cost_item` (`production_line_id`);
+