diff --git a/src/views/bg/bgpartymatter/components/BgPartymatterBPMForm.vue b/src/views/bg/bgpartymatter/components/BgPartymatterBPMForm.vue
index b052978..ef317dd 100644
--- a/src/views/bg/bgpartymatter/components/BgPartymatterBPMForm.vue
+++ b/src/views/bg/bgpartymatter/components/BgPartymatterBPMForm.vue
@@ -71,12 +71,28 @@
             </a-col>
             <a-col :span="12">
               <a-form-item label="责任部门" name="responDeptid">
-                <j-select-dept v-model:value="mainForm.responDeptid" :disabled="mainDisabled" :multiple="true" checkStrictly allow-clear />
+                <j-select-dept
+                  v-model:value="mainForm.responDeptid"
+                  :disabled="mainDisabled"
+                  :multiple="true"
+                  checkStrictly
+                  allow-clear
+                  @change="handleDeptChange('responDeptid', $event)"
+                  @select="handleDeptSelect('responDeptid', $event)"
+                />
               </a-form-item>
             </a-col>
             <a-col :span="12">
               <a-form-item label="协办部门" name="assistDeptid">
-                <j-select-dept v-model:value="mainForm.assistDeptid" :disabled="mainDisabled" :multiple="true" checkStrictly allow-clear />
+                <j-select-dept
+                  v-model:value="mainForm.assistDeptid"
+                  :disabled="mainDisabled"
+                  :multiple="true"
+                  checkStrictly
+                  allow-clear
+                  @change="handleDeptChange('assistDeptid', $event)"
+                  @select="handleDeptSelect('assistDeptid', $event)"
+                />
               </a-form-item>
             </a-col>
             <a-col :span="12">
@@ -188,6 +204,7 @@
           :form-data="formData"
           :claim="claim"
           :beforeHandle="saveMainFormBeforeProcessHandle"
+          :defaultReason="defaultHandleReason"
           @success="handleProcessSuccess"
           @claimSuccess="handleClaimSuccess"
         />
@@ -199,6 +216,7 @@
 <script lang="ts" setup>
   import { computed, onMounted, reactive, ref, watch } from 'vue';
   import { defHttp } from '/@/utils/http/axios';
+  import { queryDepartTreeSync } from '/@/api/common/api';
   import { useMessage } from '/@/hooks/web/useMessage';
   import JSelectDept from '/@/components/Form/src/jeecg/components/JSelectDept.vue';
   import Icon from '/@/components/Icon/index';
@@ -241,6 +259,15 @@
   const showBaseInfoDetail = ref(false);
   const feedbackList = ref<any[]>([]);
   const feedbackAttachmentRefreshKey = ref(0);
+  const deptNameText = reactive<Record<string, string>>({
+    responDeptid: '',
+    assistDeptid: '',
+  });
+  const deptOptionCache = reactive<Record<string, Record<string, string>>>({
+    responDeptid: {},
+    assistDeptid: {},
+  });
+  const deptResolveVersion = ref(0);
   const subApproveUser = ref('');
   const isEnd = ref(0);
   const lastGeneratedNumber = ref('');
@@ -318,6 +345,13 @@
     processDataId: props.formData?.processDataId,
     processTableName: props.formData?.processTableName,
   }));
+  const handleReasonTemplateMap: Record<string, () => string> = {
+    Task_137y5vq: buildLeaderDeptReason,
+  };
+  const defaultHandleReason = computed(() => {
+    const builder = handleReasonTemplateMap[String(processInfo.value.taskDefKey || '')];
+    return builder ? builder() : '';
+  });
 
   onMounted(() => {
     initFormData();
@@ -353,7 +387,14 @@
     loading.value = true;
     try {
       const data = await defHttp.get({ url: queryByIdUrl, params: { id: dataId } });
+      if (dataId !== props.formData?.dataId) {
+        return;
+      }
       setMainForm(data || {});
+      await syncDeptNamesFromRecord(data || {});
+      if (dataId !== props.formData?.dataId) {
+        return;
+      }
       await loadFeedbackList();
     } finally {
       loading.value = false;
@@ -364,6 +405,126 @@
     Object.keys(mainForm).forEach((key) => {
       mainForm[key] = record[key] ?? '';
     });
+    // 部门选择组件未展开时不会立刻回传 label，先使用详情接口的字典文本生成默认办理意见。
+    deptNameText.responDeptid = normalizeDeptNames(record.responDeptid_dictText || record.responDeptname);
+    deptNameText.assistDeptid = normalizeDeptNames(record.assistDeptid_dictText || record.assistDeptname);
+  }
+
+  async function syncDeptNamesFromRecord(record: Record<string, any>) {
+    const resolveVersion = ++deptResolveVersion.value;
+    const [responDept, assistDept] = await Promise.all([
+      resolveDeptNameText('responDeptid', record.responDeptid, record.responDeptid_dictText || record.responDeptname),
+      resolveDeptNameText('assistDeptid', record.assistDeptid, record.assistDeptid_dictText || record.assistDeptname),
+    ]);
+    if (resolveVersion !== deptResolveVersion.value) {
+      return;
+    }
+    applyResolvedDeptName(responDept);
+    applyResolvedDeptName(assistDept);
+  }
+
+  async function resolveDeptNameText(field: 'responDeptid' | 'assistDeptid', ids: any, fallbackText: any) {
+    const deptIds = normalizeDeptIds(ids);
+    const fallbackNames = splitDeptNames(fallbackText);
+    if (!deptIds.length) {
+      return { field, cache: {}, nameText: '' };
+    }
+
+    if (fallbackNames.length) {
+      return { field, cache: buildDeptOptionCache(deptIds, fallbackNames), nameText: normalizeDeptNames(fallbackNames.join(',')) };
+    }
+
+    try {
+      const records = (await queryDepartTreeSync({ ids: deptIds.join(','), primaryKey: 'id' })) || [];
+      const cache = records.reduce((cache: Record<string, string>, item: any) => {
+        const id = String(item?.id || item?.value || item?.key || '').trim();
+        const name = String(item?.departName || item?.title || item?.label || '').trim();
+        if (id && name) {
+          cache[id] = name;
+        }
+        return cache;
+      }, {});
+      const names = deptIds.map((id) => cache[id]).filter(Boolean);
+      return { field, cache, nameText: normalizeDeptNames(names.join(',')) };
+    } catch {
+      return { field, cache: {}, nameText: '' };
+    }
+  }
+
+  function applyResolvedDeptName(result: { field: 'responDeptid' | 'assistDeptid'; cache: Record<string, string>; nameText: string }) {
+    deptOptionCache[result.field] = result.cache;
+    deptNameText[result.field] = result.nameText;
+  }
+
+  function handleDeptSelect(field: 'responDeptid' | 'assistDeptid', options?: any[] | null) {
+    const nextCache: Record<string, string> = {};
+    if (Array.isArray(options)) {
+      options.forEach((item) => {
+        const value = String(item?.value || item?.id || item?.key || '').trim();
+        const label = String(item?.label || item?.title || item?.departName || item?.text || '').trim();
+        if (value && label) {
+          nextCache[value] = label;
+        }
+      });
+    }
+    deptOptionCache[field] = nextCache;
+    syncDeptNameText(field, mainForm[field]);
+  }
+
+  function handleDeptChange(field: 'responDeptid' | 'assistDeptid', value: any) {
+    syncDeptNameText(field, value);
+  }
+
+  function buildLeaderDeptReason() {
+    const responDeptName = normalizeDeptNames(deptNameText.responDeptid);
+    if (!responDeptName) {
+      return '';
+    }
+    const assistDeptName = normalizeDeptNames(deptNameText.assistDeptid);
+    return assistDeptName ? `请${responDeptName}牵头办理，请${assistDeptName}协办；` : `请${responDeptName}牵头办理；`;
+  }
+
+  function normalizeDeptNames(value: any) {
+    return splitDeptNames(value).join('、');
+  }
+
+  function splitDeptNames(value: any) {
+    return String(value || '')
+      .split(/[,，;；、]/)
+      .map((item) => item.trim())
+      .filter(Boolean);
+  }
+
+  function buildDeptOptionCache(ids: string[], names: string[]) {
+    return ids.reduce((cache: Record<string, string>, id, index) => {
+      const name = names[index];
+      if (id && name) {
+        cache[id] = name;
+      }
+      return cache;
+    }, {});
+  }
+
+  function syncDeptNameText(field: 'responDeptid' | 'assistDeptid', value: any) {
+    const ids = normalizeDeptIds(value);
+    if (!ids.length) {
+      deptNameText[field] = '';
+      return;
+    }
+    const names = ids.map((id) => deptOptionCache[field][id]).filter(Boolean);
+    if (names.length) {
+      deptNameText[field] = normalizeDeptNames(names.join(','));
+    }
+  }
+
+  function normalizeDeptIds(value: any) {
+    if (Array.isArray(value)) {
+      return value.map((item) => String(item || '').trim()).filter(Boolean);
+    }
+    return String(value || '')
+      .split(',')
+      .map((item) => item.trim())
+      .filter(Boolean);
   }
 
   function syncGeneratedNumber() {
diff --git a/src/views/super/bpm/process/personalOffice/myHandleTask/content/MyHandleContent.vue b/src/views/super/bpm/process/personalOffice/myHandleTask/content/MyHandleContent.vue
index 91ad534..929184f 100644
--- a/src/views/super/bpm/process/personalOffice/myHandleTask/content/MyHandleContent.vue
+++ b/src/views/super/bpm/process/personalOffice/myHandleTask/content/MyHandleContent.vue
@@ -108,7 +108,7 @@
 </template>
 
 <script>
-  import { ref, reactive, computed, toRaw, unref, watchEffect } from 'vue';
+  import { ref, reactive, computed, toRaw, unref, watch, watchEffect } from 'vue';
   import { initDictOptions } from '/@/utils/dict';
   import { useMessage } from '/@/hooks/web/useMessage';
   import { taskComplaint, taskComplete, beforeAddSignTask, afterAddSignTask, addMultiInstance} from "../task.handle.api";
@@ -176,6 +176,10 @@
       beforeHandle: {
         type: Function,
         default: undefined,
+      },
+      defaultReason: {
+        type: String,
+        default: '',
       }
     },
     emits: ['success'],
@@ -216,6 +220,7 @@
         ccUserRealNames: '',
         fileList: '',
       });
+      const lastAutoReason = ref('');
       //审批人用户是否多选
       const multiSelectUser = computed(() => {
         return unref(selectUserType) == 'change-user' ? false : true;
@@ -224,6 +229,24 @@
       watchEffect(() => {
         props.turnbackTaskId && (model.rejectModelNode = props.turnbackTaskId);
       });
+      // 默认处理意见只在空值或仍为上一条自动意见时刷新，避免覆盖用户手动输入。
+      watch(
+        () => props.defaultReason,
+        (value) => {
+          const nextReason = value || '';
+          const canApplyDefaultReason = !model.reason || model.reason === lastAutoReason.value;
+          if (nextReason && canApplyDefaultReason) {
+            model.reason = nextReason;
+            lastAutoReason.value = nextReason;
+            return;
+          }
+          if (!nextReason && model.reason === lastAutoReason.value) {
+            model.reason = '';
+          }
+          lastAutoReason.value = nextReason;
+        },
+        { immediate: true }
+      );
       // 选择下一步操作人
       const checkedNext = ref(false);
       const nextPersonList = ref([]);
diff --git a/src/views/super/bpm/process/personalOffice/myHandleTask/content/TaskHandleInnerContent.vue b/src/views/super/bpm/process/personalOffice/myHandleTask/content/TaskHandleInnerContent.vue
index c1fc25f..607a36a 100644
--- a/src/views/super/bpm/process/personalOffice/myHandleTask/content/TaskHandleInnerContent.vue
+++ b/src/views/super/bpm/process/personalOffice/myHandleTask/content/TaskHandleInnerContent.vue
@@ -20,6 +20,7 @@
       :allowCounterSignAddUser="allowCounterSignAddUser"
       :allowReject="allowReject"
       :beforeHandle="beforeHandle"
+      :defaultReason="defaultReason"
       :currentTaskName="currentNode.taskName">
     </my-handle-content>
 
@@ -61,6 +62,10 @@
         type: Function,
         default: undefined
       },
+      defaultReason: {
+        type: String,
+        default: '',
+      },
       showSelnextUser: {
         type: Boolean,
         default: true,