diff --git a/src/views/modules/erf/expApplyList.vue b/src/views/modules/erf/expApplyList.vue
index cc73dbb..af33e01 100644
--- a/src/views/modules/erf/expApplyList.vue
+++ b/src/views/modules/erf/expApplyList.vue
@@ -647,13 +647,14 @@
             placeholder="请选择计划员（可多选）"
             style="width: 100%"
             multiple
-            clearable
+            @change="handlePlannerSelectionChange"
             @remove-tag="handlePlannerRemoveTag">
             <el-option
               v-for="planner in plannerList"
               :key="planner.userId"
               :label="planner.userDisplay || planner.username"
-              :value="planner.userId">
+              :value="planner.userId"
+              :disabled="isLockedPlanner(planner.userId)">
             </el-option>
           </el-select>
           <div style="margin-top: 1px; color: #909399; font-size: 12px">
@@ -1089,8 +1090,7 @@ export default {
           this.qualityManagerList = data.qualityManagers || []
           this.plannerList = data.planners || []
           // 记录默认计划员郑宇的 userId，用于锁定不可移除
-          const joyce = this.plannerList.find(p => p.userDisplay && p.userDisplay.includes('郑宇'))
-          this.lockedPlannerUserId = joyce ? joyce.userId : null
+          this.lockedPlannerUserId = this.getLockedPlannerUserId(this.plannerList)
           // 根据事业部设置默认生产经理（使用user_display模糊匹配）
           const defaultProdManagerIds = []
           if (row.buDesc === 'RFID') {
@@ -1134,13 +1134,10 @@ export default {
             prodManagerAnyApproved: true,
             qualityManagerAnyApproved: true,
             plannerIds: (() => {
-            // 默认选中Joyce（中文名郑宇）；若无郑宇则单人列表时默认全选
-            const joyce = this.plannerList.find(p =>
-              p.userDisplay && p.userDisplay.toLowerCase().includes('郑宇')
-            )
-            if (joyce) return [joyce.userId]
-            return this.plannerList.length === 1 ? [this.plannerList[0].userId] : []
-          })()
+              // 默认选中郑宇；若无郑宇则单人列表时默认全选
+              if (this.lockedPlannerUserId) return [this.lockedPlannerUserId]
+              return this.plannerList.length === 1 ? [this.plannerList[0].userId] : []
+            })()
           }
 
           // 显示弹窗
@@ -1154,16 +1151,63 @@ export default {
     },
 
     /**
-     * 计划员移除标签拦截：默认计划员，不允许被移除
+     * 获取锁定计划员（郑宇）的 userId
+     */
+    getLockedPlannerUserId(planners) {
+      const plannerArr = Array.isArray(planners) ? planners : []
+      const lockedPlanner = plannerArr.find(planner => {
+        const userDisplay = (planner.userDisplay || '').toLowerCase()
+        const username = (planner.username || '').toLowerCase()
+        return userDisplay.includes('郑宇') ||
+          userDisplay.includes('joyce') ||
+          userDisplay.includes('zhengyu') ||
+          username.includes('郑宇') ||
+          username.includes('joyce') ||
+          username.includes('zhengyu')
+      })
+      return lockedPlanner ? lockedPlanner.userId : null
+    },
+
+    /**
+     * 判断是否为锁定计划员
+     */
+    isLockedPlanner(userId) {
+      return !!this.lockedPlannerUserId && userId === this.lockedPlannerUserId
+    },
+
+    /**
+     * 确保锁定计划员始终被选中
+     */
+    ensureLockedPlannerSelected(selectedIds, showWarning) {
+      if (!this.lockedPlannerUserId) return
+      const currentIds = Array.isArray(selectedIds)
+        ? selectedIds
+        : (Array.isArray(this.submitData.plannerIds) ? this.submitData.plannerIds : [])
+
+      if (!currentIds.includes(this.lockedPlannerUserId)) {
+        const deduplicatedIds = currentIds.filter(id => id !== this.lockedPlannerUserId)
+        this.submitData.plannerIds = [this.lockedPlannerUserId, ...deduplicatedIds]
+        if (showWarning) {
+          this.$message.warning('郑宇为固定计划员，不可取消')
+        }
+      }
+    },
+
+    /**
+     * 计划员选择变更拦截：郑宇不可取消
+     */
+    handlePlannerSelectionChange(selectedIds) {
+      this.ensureLockedPlannerSelected(selectedIds, true)
+    },
+
+    /**
+     * 计划员移除标签拦截：郑宇不可移除
      */
     handlePlannerRemoveTag(removedId) {
       if (this.lockedPlannerUserId && removedId === this.lockedPlannerUserId) {
         this.$nextTick(() => {
-          if (!this.submitData.plannerIds.includes(this.lockedPlannerUserId)) {
-            this.submitData.plannerIds = [this.lockedPlannerUserId, ...this.submitData.plannerIds]
-          }
+          this.ensureLockedPlannerSelected(this.submitData.plannerIds, false)
         })
-        this.$message.warning('该计划员不可移除')
       }
     },