diff --git a/klp-ui/src/api/wms/coil.js b/klp-ui/src/api/wms/coil.js
index 0c02d69b..d8404abc 100644
--- a/klp-ui/src/api/wms/coil.js
+++ b/klp-ui/src/api/wms/coil.js
@@ -538,4 +538,12 @@ export function listForPeriodComparison(data) {
     timeout: 600000,
     data: data
   })
+}
+
+// 钢卷加工链追溯查询（双向：向上到根节点，向下到所有后代）
+export function getCoilChain(coilId) {
+  return request({
+    url: '/wms/materialCoil/chain/all/' + coilId,
+    method: 'get'
+  })
 }
\ No newline at end of file
diff --git a/klp-ui/src/views/wms/coil/info/components/CostInfoSection.vue b/klp-ui/src/views/wms/coil/info/components/CostInfoSection.vue
index 3c0096b3..6c20d66c 100644
--- a/klp-ui/src/views/wms/coil/info/components/CostInfoSection.vue
+++ b/klp-ui/src/views/wms/coil/info/components/CostInfoSection.vue
@@ -60,7 +60,7 @@
 <script>
 import * as echarts from 'echarts'
 import { listPendingAction } from '@/api/wms/pendingAction'
-import { getMaterialCoil } from '@/api/wms/coil'
+import { getCoilChain } from '@/api/wms/coil'
 import { listProdReport } from '@/api/cost/prodReport'
 import { listProdMetric } from '@/api/cost/prodMetric'
 import { listProdMetricResult } from '@/api/cost/prodMetricResult'
@@ -74,16 +74,29 @@ const PROD_LINE_NAME = { 1: '镀锌产线', 2: '酸轧产线' }
 const ACTION_TYPE_MAP = {
   11: '酸连轧工序',
   120: '酸轧分条',
+
   201: '酸轧合卷',
   202: '镀锌合卷',
   203: '脱脂合卷',
   204: '拉矫平整合卷',
   205: '双机架合卷',
   206: '镀铬合卷',
+
   501: '镀锌工序',
   502: '脱脂工序',
+  503: '拉矫平整工序',
   504: '双机架工序',
-  506: '纵剪分条工序'
+  505: '镀铬工序',
+  506: '纵剪分条工序',
+
+  520: '酸轧修复工序',
+  521: '镀锌修复工序',
+  522: '脱脂修复工序',
+  523: '拉矫修复工序',
+  524: '双机架修复工序',
+  525: '镀铬修复工序',
+
+  600: '退火工序'
 }
 
 export default {
@@ -135,17 +148,23 @@ export default {
       this.pathLoading = true
       this.pathChecked = false
       try {
-        const lineage = await this.buildCoilLineage(coilId, new Set(), 0)
-        if (lineage.length <= 1) {
+        const res = await getCoilChain(coilId)
+        const chainData = res.data || {}
+        const traceList = chainData.traceList || []
+
+        if (traceList.length <= 1) {
           this.pathGraphData = { nodes: [], links: [] }
           return
         }
 
-        const coilMap = {}
-        lineage.forEach(c => { coilMap[String(c.coilId)] = c })
-        const allCoilIds = lineage.map(c => c.coilId).filter(Boolean)
+        const allCoilIds = []
+        traceList.forEach(node => {
+          const coil = node.coil
+          if (coil && coil.coilId) {
+            allCoilIds.push(coil.coilId)
+          }
+        })
 
-        // 用每个卷的 coilId 查询完整的 pendingAction，批量并发
         const actionResults = await Promise.allSettled(
           allCoilIds.map(id => listPendingAction({
             coilId: id,
@@ -171,7 +190,7 @@ export default {
           console.log('pendingAction 样例：', sampleAction)
         }
 
-        this.pathGraphData = this.buildGraphData(lineage, coilId, Object.values(actionMap), coilMap)
+        this.pathGraphData = this.buildGraphData(traceList, coilId, Object.values(actionMap))
         await this.loadCostData()
       } catch (e) {
         console.error('获取加工路径失败：', e)
@@ -184,33 +203,11 @@ export default {
         })
       }
     },
-    async buildCoilLineage(coilId, visited, depth) {
-      if (!coilId || visited.has(String(coilId)) || depth > 20) return []
-      visited.add(String(coilId))
-
-      const res = await getMaterialCoil(coilId)
-      const coil = res.data || {}
-      if (!coil.coilId) return []
-
-      const parents = []
-      if (coil.parentCoilId) {
-        const parentIds = String(coil.parentCoilId).split(',').map(id => id.trim()).filter(Boolean)
-        for (const pid of parentIds) {
-          if (!visited.has(pid)) {
-            const pLineage = await this.buildCoilLineage(pid, visited, depth + 1)
-            parents.push(...pLineage)
-          }
-        }
-      }
-
-      return [...parents, coil]
-    },
-    buildGraphData(lineage, currentCoilId, actions, coilMap) {
+    buildGraphData(traceList, currentCoilId, actions) {
       const nodes = []
       const links = []
       const nodeIdxMap = {}
 
-      // 建立 outputCoilIds → action 的索引，兼容多种后端字段名
       const actionByOutput = {}
       const actionByInput = {}
       function getOutputIds(a) {
@@ -225,41 +222,41 @@ export default {
             if (tid) actionByOutput[tid] = a
           })
         }
-        // 同时建立输入侧索引作为兜底
         if (a.coilId) {
           const key = String(a.coilId)
           if (!actionByInput[key]) actionByInput[key] = a
         }
       })
 
-      // 计算层级
-      const levels = {}
-      lineage.forEach(coil => {
-        if (!coil.parentCoilId) {
-          levels[String(coil.coilId)] = 0
-        } else {
-          const parentIds = String(coil.parentCoilId).split(',').map(id => id.trim()).filter(Boolean)
-          const maxParentLevel = Math.max(...parentIds.map(pid => levels[pid] || 0))
-          levels[String(coil.coilId)] = maxParentLevel + 1
-        }
-      })
+      // 使用 traceList 自带的 depth，归一化使根节点 level=0
+      const depths = traceList.map(n => n.depth != null ? n.depth : 0)
+      const minDepth = Math.min(...depths)
 
       const levelGroups = {}
-      lineage.forEach(coil => {
-        const lv = levels[String(coil.coilId)]
+      traceList.forEach(node => {
+        const coil = node.coil
+        if (!coil || !coil.coilId) return
+        const lv = (node.depth != null ? node.depth : 0) - minDepth
         if (!levelGroups[lv]) levelGroups[lv] = []
         levelGroups[lv].push(coil)
       })
 
-      // 构建节点
-      lineage.forEach(coil => {
-        const isRoot = !coil.parentCoilId
+      const levelIndexMap = {}
+      Object.keys(levelGroups).forEach(lv => {
+        levelGroups[lv].forEach((coil, idx) => {
+          levelIndexMap[String(coil.coilId)] = idx
+        })
+      })
+
+      traceList.forEach(node => {
+        const coil = node.coil
+        if (!coil || !coil.coilId) return
+        const isRoot = !node.parentCoilId
         const isCurrent = String(coil.coilId) === String(currentCoilId)
         const category = isCurrent ? 'current' : (isRoot ? 'root' : 'intermediate')
 
-        const lv = levels[String(coil.coilId)]
+        const lv = (node.depth != null ? node.depth : 0) - minDepth
         const siblings = levelGroups[lv] || []
-        const sibIdx = siblings.findIndex(c => String(c.coilId) === String(coil.coilId))
         const totalInLevel = siblings.length
 
         nodeIdxMap[String(coil.coilId)] = nodes.length
@@ -270,7 +267,7 @@ export default {
           id: String(coil.coilId),
           category,
           level: lv,
-          levelIndex: sibIdx,
+          levelIndex: levelIndexMap[String(coil.coilId)] || 0,
           levelTotal: totalInLevel,
           symbolSize: 65,
           coilNo: coil.currentCoilNo,
@@ -295,7 +292,6 @@ export default {
         })
       })
 
-      // 确保节点 name 唯一（ECharts 以 name 标识节点，重名会合并，导致 dataIndex 错误）
       const nameCount = {}
       nodes.forEach(n => {
         nameCount[n.name] = (nameCount[n.name] || 0) + 1
@@ -308,12 +304,14 @@ export default {
         }
       })
 
-      // 构建边
-      lineage.forEach(coil => {
-        if (!coil.parentCoilId) return
+      traceList.forEach(node => {
+        const coil = node.coil
+        if (!coil || !coil.coilId) return
         const childIdx = nodeIdxMap[String(coil.coilId)]
-        const parentIds = String(coil.parentCoilId).split(',').map(id => id.trim()).filter(Boolean)
+        const parentIdStr = node.parentCoilId || (coil.parentCoilId)
+        if (!parentIdStr) return
 
+        const parentIds = String(parentIdStr).split(',').map(id => id.trim()).filter(Boolean)
         const action = actionByOutput[String(coil.coilId)] || {}
 
         parentIds.forEach(pid => {