diff --git a/src/views/modules/erf/components/expApplyForm.vue b/src/views/modules/erf/components/expApplyForm.vue
index 36fceed..043108c 100644
--- a/src/views/modules/erf/components/expApplyForm.vue
+++ b/src/views/modules/erf/components/expApplyForm.vue
@@ -79,14 +79,14 @@
             </el-input>
           </el-form-item>
         </el-col>
-        <el-col :span="8">
+        <el-col :span="12">
           <el-form-item label="试验负责人">
             <span v-if="!readonly" style="cursor: pointer" slot="label" @click="getBaseList(103)"><a href="#">试验负责人</a></span>
             <el-input v-model="saveHeaderData.projectLeader" disabled></el-input>
           </el-form-item>
         </el-col>
 
-        <el-col :span="8">
+        <el-col :span="12">
           <el-form-item label="PJM负责人">
             <el-select
               v-model="saveHeaderData.pjmLeaderUserId"
@@ -105,14 +105,16 @@
             </el-select>
           </el-form-item>
         </el-col>
-        <el-col :span="8">
+        <el-col :span="24">
           <el-form-item label="生产车间负责人">
             <el-select
-              v-model="saveHeaderData.workshopLeaderUserId"
+              v-model="workshopLeaderUserIds"
               :disabled="readonly"
+              multiple
+              collapse-tags-tooltip
               clearable
               filterable
-              placeholder="非必填"
+              placeholder="可多选，非必填"
               style="width: 100%"
               @change="handleWorkshopLeaderChange">
               <el-option
@@ -301,13 +303,14 @@ export default {
         projectLeader: this.$store.state.user.userDisplay,
         pjmLeaderUserId: null,
         pjmLeaderName: '',
-        workshopLeaderUserId: null,
+        workshopLeaderUserId: '',
         workshopLeaderName: '',
         contactMethod: '',
         processRequirement: '',
         creatorUserId: this.$store.state.user.id,
         creatorName: this.$store.state.user.userDisplay
       },
+      workshopLeaderUserIds: [],
 
       formRules: {
         applyNo: [
@@ -340,8 +343,9 @@ export default {
       if (!newVal) {
         this.saveHeaderData.pjmLeaderUserId = null
         this.saveHeaderData.pjmLeaderName = ''
-        this.saveHeaderData.workshopLeaderUserId = null
+        this.saveHeaderData.workshopLeaderUserId = ''
         this.saveHeaderData.workshopLeaderName = ''
+        this.workshopLeaderUserIds = []
         // BU为空时回退查询全部负责人
         this.loadPjmLeaderList('')
         return
@@ -350,8 +354,9 @@ export default {
         if (oldVal !== undefined && oldVal !== null && oldVal !== '') {
           this.saveHeaderData.pjmLeaderUserId = null
           this.saveHeaderData.pjmLeaderName = ''
-          this.saveHeaderData.workshopLeaderUserId = null
+          this.saveHeaderData.workshopLeaderUserId = ''
           this.saveHeaderData.workshopLeaderName = ''
+          this.workshopLeaderUserIds = []
         }
         this.loadPjmLeaderList(newVal)
       }
@@ -369,6 +374,7 @@ export default {
       }
       this.isEdit = true
     }
+    this.normalizeWorkshopLeaderSelection()
     // 首次打开弹窗时查询负责人列表（BU为空时查询全量）
     this.loadPjmLeaderList(this.saveHeaderData.buNo || '')
   },
@@ -402,8 +408,8 @@ export default {
           if (this.saveHeaderData.pjmLeaderUserId && !this.saveHeaderData.pjmLeaderName) {
             this.handlePjmLeaderChange(this.saveHeaderData.pjmLeaderUserId)
           }
-          if (this.saveHeaderData.workshopLeaderUserId && !this.saveHeaderData.workshopLeaderName) {
-            this.handleWorkshopLeaderChange(this.saveHeaderData.workshopLeaderUserId)
+          if (this.workshopLeaderUserIds.length > 0) {
+            this.handleWorkshopLeaderChange(this.workshopLeaderUserIds)
           }
         } else {
           this.pjmLeaderList = []
@@ -431,18 +437,79 @@ export default {
         : (this.saveHeaderData.pjmLeaderName || '')
     },
 
+    /**
+     * 解析生产车间负责人ID列表
+     */
+    parseWorkshopLeaderUserIds(value) {
+      if (value === null || value === undefined || value === '') {
+        return []
+      }
+      const sourceList = Array.isArray(value) ? value : String(value).split(',')
+      const idList = []
+      sourceList.forEach(item => {
+        const id = Number(String(item).trim())
+        if (Number.isFinite(id) && !idList.includes(id)) {
+          idList.push(id)
+        }
+      })
+      return idList
+    },
+
+    /**
+     * 解析生产车间负责人姓名列表
+     */
+    parseWorkshopLeaderNames(value) {
+      if (!value) {
+        return []
+      }
+      return String(value).split(',').map(item => item.trim()).filter(item => !!item)
+    },
+
+    /**
+     * 初始化生产车间负责人多选数据
+     */
+    normalizeWorkshopLeaderSelection() {
+      this.workshopLeaderUserIds = this.parseWorkshopLeaderUserIds(this.saveHeaderData.workshopLeaderUserId)
+      this.saveHeaderData.workshopLeaderUserId = this.workshopLeaderUserIds.length > 0
+        ? this.workshopLeaderUserIds.join(',')
+        : ''
+      this.saveHeaderData.workshopLeaderName = this.parseWorkshopLeaderNames(
+        this.saveHeaderData.workshopLeaderName
+      ).join(',')
+    },
+
     /**
      * 处理生产车间负责人变更
      */
-    handleWorkshopLeaderChange(userId) {
-      if (!userId) {
+    handleWorkshopLeaderChange(userIds) {
+      const oldWorkshopLeaderIds = this.parseWorkshopLeaderUserIds(this.saveHeaderData.workshopLeaderUserId)
+      const oldWorkshopLeaderNames = this.parseWorkshopLeaderNames(this.saveHeaderData.workshopLeaderName)
+      const oldWorkshopLeaderNameMap = {}
+      oldWorkshopLeaderIds.forEach((id, index) => {
+        const oldName = oldWorkshopLeaderNames[index]
+        if (oldName) {
+          oldWorkshopLeaderNameMap[id] = oldName
+        }
+      })
+
+      const workshopLeaderIds = this.parseWorkshopLeaderUserIds(userIds)
+      this.workshopLeaderUserIds = workshopLeaderIds
+      this.saveHeaderData.workshopLeaderUserId = workshopLeaderIds.length > 0 ? workshopLeaderIds.join(',') : ''
+
+      if (workshopLeaderIds.length === 0) {
         this.saveHeaderData.workshopLeaderName = ''
         return
       }
-      const selected = this.workshopLeaderList.find(item => item.userId === userId)
-      this.saveHeaderData.workshopLeaderName = selected
-        ? (selected.userDisplay || selected.username || '')
-        : (this.saveHeaderData.workshopLeaderName || '')
+
+      const workshopLeaderNameList = workshopLeaderIds.map(userId => {
+        const selected = this.workshopLeaderList.find(item => Number(item.userId) === Number(userId))
+        if (selected) {
+          return selected.userDisplay || selected.username || ''
+        }
+        return oldWorkshopLeaderNameMap[userId] || ''
+      }).filter(name => !!name)
+
+      this.saveHeaderData.workshopLeaderName = workshopLeaderNameList.join(',')
     },
 
     /**
@@ -466,17 +533,21 @@ export default {
      * 编辑场景兜底：已选生产车间负责人不在当前下拉项时补充显示
      */
     ensureWorkshopLeaderOption() {
-      if (!this.saveHeaderData.workshopLeaderUserId) {
+      if (!this.workshopLeaderUserIds || this.workshopLeaderUserIds.length === 0) {
         return
       }
-      const exist = this.workshopLeaderList.some(item => item.userId === this.saveHeaderData.workshopLeaderUserId)
-      if (!exist && this.saveHeaderData.workshopLeaderName) {
-        this.workshopLeaderList.push({
-          userId: this.saveHeaderData.workshopLeaderUserId,
-          username: this.saveHeaderData.workshopLeaderName,
-          userDisplay: this.saveHeaderData.workshopLeaderName
-        })
-      }
+      const workshopLeaderNames = this.parseWorkshopLeaderNames(this.saveHeaderData.workshopLeaderName)
+      this.workshopLeaderUserIds.forEach((userId, index) => {
+        const exist = this.workshopLeaderList.some(item => Number(item.userId) === Number(userId))
+        if (!exist) {
+          const userDisplay = workshopLeaderNames[index] || String(userId)
+          this.workshopLeaderList.push({
+            userId: userId,
+            username: userDisplay,
+            userDisplay: userDisplay
+          })
+        }
+      })
     },
 
     /**