diff --git a/src/api/approval/instance/model/index.ts b/src/api/approval/instance/model/index.ts
index 5463d00..e9610ae 100644
--- a/src/api/approval/instance/model/index.ts
+++ b/src/api/approval/instance/model/index.ts
@@ -9,12 +9,12 @@ export interface ApprovalQueryParam extends PageParam {
   // 单号
   bizNo?: string;
   // 关键词：单号、名称或标题、实施单位
-  keyword?: string;
+  keywords?: string;
   // 报送部门id
   reportOrgId?: number;
   // 受理部门id
   acceptOrgId?: number;
-  // 发起人id
+  // 报送人id
   reporterId?: number;
   // 单据状态
   status?: string;
@@ -93,6 +93,18 @@ export interface ApprovalConfirm {
   handleTime?: string;
 }
 
+/**
+ * 实例上的待办任务（PC 按任务改派）
+ */
+export interface ApprovalPendingTask {
+  id?: number;
+  nodeKey?: string;
+  nodeName?: string;
+  nodeType?: string;
+  assigneeId?: number;
+  assigneeName?: string;
+}
+
 /**
  * 我的待处理任务
  */
@@ -144,6 +156,7 @@ export interface ApprovalInstance {
   records?: ApprovalRecord[];
   confirms?: ApprovalConfirm[];
   myTask?: ApprovalMyTask | null;
+  pendingTasks?: ApprovalPendingTask[];
   permissions?: Record<string, boolean>;
 }
 
@@ -191,6 +204,8 @@ export interface ApprovalTodoParam extends PageParam {
   status?: string;
   // 单据类型
   docType?: string;
+  // 查询范围：mine（默认本人待办）/all（全租户待办，需 assign 权限）
+  scope?: 'mine' | 'all';
   // 关键词：单号、名称或标题、实施单位
   keywords?: string;
 }
diff --git a/src/views/approval/instance/components/detail.vue b/src/views/approval/instance/components/detail.vue
index d8a3da3..4fa3feb 100644
--- a/src/views/approval/instance/components/detail.vue
+++ b/src/views/approval/instance/components/detail.vue
@@ -29,7 +29,7 @@
           <a-descriptions-item label="当前节点">
             {{ data.currentNodeName || '-' }}
           </a-descriptions-item>
-          <a-descriptions-item label="发起人">
+          <a-descriptions-item label="报送人">
             {{ data.reporterName || '-' }}
           </a-descriptions-item>
           <a-descriptions-item label="报送部门">
diff --git a/src/views/approval/instance/components/search.vue b/src/views/approval/instance/components/search.vue
index 17b4fd2..c0053a5 100644
--- a/src/views/approval/instance/components/search.vue
+++ b/src/views/approval/instance/components/search.vue
@@ -131,7 +131,7 @@
     prop:
       | 'docType'
       | 'bizNo'
-      | 'keyword'
+      | 'keywords'
       | 'reportOrgId'
       | 'acceptOrgId'
       | 'reporterId'
@@ -140,10 +140,10 @@
   }[] = [
     { prop: 'docType', label: '单据类型' },
     { prop: 'bizNo', label: '单号' },
-    { prop: 'keyword', label: '标题或名称' },
+    { prop: 'keywords', label: '标题或名称' },
     { prop: 'reportOrgId', label: '报送部门' },
     { prop: 'acceptOrgId', label: '受理部门' },
-    { prop: 'reporterId', label: '发起人' },
+    { prop: 'reporterId', label: '报送人' },
     { prop: 'status', label: '状态' }
   ];
 
@@ -167,7 +167,7 @@
   const { form, resetFields } = useFormData<ApprovalQueryParam>({
     docType: undefined,
     bizNo: '',
-    keyword: '',
+    keywords: '',
     reportOrgId: undefined,
     acceptOrgId: undefined,
     reporterId: undefined,
@@ -182,9 +182,9 @@
   // 组织下拉选项
   const organizationOptions = ref<{ label: string; value: number }[]>([]);
 
-  // 发起人下拉选项
+  // 报送人下拉选项
   const userOptions = ref<{ label: string; value: number }[]>([]);
-  // 发起人请求状态
+  // 报送人请求状态
   const userLoading = ref(false);
 
   // 组织远程过滤
@@ -192,7 +192,7 @@
     return (option?.label ?? '').toLowerCase().includes(input.toLowerCase());
   };
 
-  // 远程搜索发起人
+  // 远程搜索报送人
   const searchUsers = (keywords?: string) => {
     userLoading.value = true;
     searchApprovalUsers({ keywords })
diff --git a/src/views/approval/todo/components/detail-drawer.vue b/src/views/approval/todo/components/detail-drawer.vue
index bfdeeb1..18f740f 100644
--- a/src/views/approval/todo/components/detail-drawer.vue
+++ b/src/views/approval/todo/components/detail-drawer.vue
@@ -76,7 +76,7 @@
           <a-descriptions-item label="当前节点">
             {{ detail.currentNodeName || '-' }}
           </a-descriptions-item>
-          <a-descriptions-item label="发起人">
+          <a-descriptions-item label="报送人">
             {{ detail.reporterName }}
           </a-descriptions-item>
           <a-descriptions-item label="报送部门">
@@ -169,6 +169,14 @@
           <a-descriptions-item label="节点">
             {{ detail.currentNodeName || '-' }}
           </a-descriptions-item>
+          <a-descriptions-item label="待办人员">
+            <template v-if="pendingTasks.length">
+              <a-tag v-for="task in pendingTasks" :key="task.id" color="blue">
+                {{ task.nodeName }}·{{ task.assigneeName }}
+              </a-tag>
+            </template>
+            <span v-else>-</span>
+          </a-descriptions-item>
           <a-descriptions-item label="存档确认">
             <template v-if="confirms.length">
               <a-tag
@@ -270,6 +278,13 @@
       @ok="submitAssign"
     >
       <a-form layout="vertical">
+        <a-form-item v-if="pendingTasks.length" label="待办任务" required>
+          <a-select
+            v-model:value="assignTaskId"
+            :options="pendingTaskOptions"
+            placeholder="请选择需要改派的待办任务"
+          />
+        </a-form-item>
         <a-form-item label="改派对象" required>
           <a-select
             v-model:value="assignForm.targetUserId"
@@ -302,6 +317,7 @@
   import type {
     ApprovalAttachment,
     ApprovalInstance,
+    ApprovalPendingTask,
     ApprovalUser
   } from '@/api/approval/instance/model';
   import { getInstance } from '@/api/approval/instance';
@@ -346,6 +362,9 @@
   );
   const records = computed(() => detail.value?.records ?? []);
   const confirms = computed(() => detail.value?.confirms ?? []);
+  const pendingTasks = computed<ApprovalPendingTask[]>(
+    () => detail.value?.pendingTasks ?? []
+  );
 
   const load = async () => {
     if (!props.instanceId) {
@@ -554,6 +573,13 @@
     targetUserId: undefined,
     reason: ''
   });
+  const assignTaskId = ref<number | undefined>(undefined);
+  const pendingTaskOptions = computed(() =>
+    pendingTasks.value.map((task) => ({
+      value: task.id as number,
+      label: `${task.nodeName || task.nodeKey || ''}·${task.assigneeName || ''}`
+    }))
+  );
   let searchTimer: ReturnType<typeof setTimeout> | undefined;
 
   const doSearchUsers = async (keywords?: string) => {
@@ -585,14 +611,15 @@
   const openAssign = () => {
     assignForm.targetUserId = undefined;
     assignForm.reason = '';
+    assignTaskId.value = detail.value?.myTask?.id ?? pendingTasks.value[0]?.id;
     assignVisible.value = true;
     doSearchUsers();
   };
 
   const submitAssign = async () => {
-    const taskId = detail.value?.myTask?.id;
+    const taskId = assignTaskId.value;
     if (!taskId) {
-      message.error('待办任务不存在，请刷新');
+      message.error('请选择待办任务');
       return;
     }
     if (!assignForm.targetUserId) {
@@ -613,8 +640,12 @@
       message.success('改派成功');
       assignVisible.value = false;
       emit('done');
-      // 改派后待办不再属于当前用户，关闭抽屉
-      updateVisible(false);
+      if (detail.value?.myTask?.id === taskId) {
+        // 改派的是当前用户的待办，关闭抽屉回到列表
+        updateVisible(false);
+      } else {
+        await load();
+      }
     } catch (e: any) {
       message.error(e.message);
     } finally {
diff --git a/src/views/approval/todo/index.vue b/src/views/approval/todo/index.vue
index dd5eb33..afa3347 100644
--- a/src/views/approval/todo/index.vue
+++ b/src/views/approval/todo/index.vue
@@ -31,6 +31,13 @@
                 @pressEnter="reload"
                 @search="reload"
               />
+              <a-checkbox
+                v-if="canAssign"
+                v-model:checked="allScope"
+                @change="reload"
+              >
+                全部待办
+              </a-checkbox>
               <a-button @click="resetSearch">重置</a-button>
             </a-space>
           </template>
@@ -68,6 +75,7 @@
     ColumnItem
   } from 'ele-admin-pro/es/ele-pro-table/types';
   import useSearch from '@/utils/use-search';
+  import { hasPermission } from '@/utils/permission';
   import type {
     ApprovalItem,
     ApprovalTodoParam
@@ -82,6 +90,9 @@
   const showDetail = ref(false);
   // 当前单据id
   const currentId = ref<number | null>(null);
+  // 是否查看全租户待办（仅 assign 权限）
+  const allScope = ref(false);
+  const canAssign = hasPermission('approval:instance:assign');
 
   // 搜索条件
   const { where, resetFields } = useSearch<ApprovalTodoParam>({
@@ -122,7 +133,7 @@
       ellipsis: true
     },
     {
-      title: '发起人',
+      title: '报送人',
       dataIndex: 'reporterName',
       key: 'reporterName',
       width: 120,
@@ -171,6 +182,7 @@
     return pageApprovalTodo({
       status: where.status,
       keywords: where.keywords?.trim() || undefined,
+      scope: allScope.value ? 'all' : undefined,
       page,
       limit
     });
@@ -184,6 +196,7 @@
   // 重置搜索
   const resetSearch = () => {
     resetFields();
+    allScope.value = false;
     reload();
   };