diff --git a/src/components/custom/user-select-modal.vue b/src/components/custom/user-select-modal.vue
index e7f80cc3..feda03f5 100644
--- a/src/components/custom/user-select-modal.vue
+++ b/src/components/custom/user-select-modal.vue
@@ -192,6 +192,10 @@ function closeModal() {
 }
 
 function handleConfirm() {
+  if (checkedRowKeys.value.length === 0) {
+    window.$message?.error('请选择用户');
+    return;
+  }
   // 获取选中行对应的用户对象（从所有页面数据中筛选）
   const selectedUsers = allPagesData.value.filter(item => checkedRowKeys.value.includes(item.userId.toString()));
   emit('confirm', checkedRowKeys.value, selectedUsers);
diff --git a/src/components/custom/workflow/back-task-modal.vue b/src/components/custom/workflow/back-task-modal.vue
new file mode 100644
index 00000000..79103228
--- /dev/null
+++ b/src/components/custom/workflow/back-task-modal.vue
@@ -0,0 +1,142 @@
+<script lang="ts" setup>
+import { reactive, ref, watch } from 'vue';
+import type { UploadFileInfo } from 'naive-ui';
+import { useLoading } from '@sa/hooks';
+import { messageTypeOptions } from '@/constants/workflow';
+import { fetchBackTask, fetchGetBackNode } from '@/service/api/workflow/task';
+defineOptions({
+  name: 'BackTaskModal'
+});
+
+interface Props {
+  task: Api.Workflow.Task;
+}
+
+const props = defineProps<Props>();
+
+interface Emits {
+  (e: 'submit'): void;
+}
+
+const emit = defineEmits<Emits>();
+
+const visible = defineModel<boolean>('visible', {
+  default: false
+});
+const title = defineModel<string>('title', {
+  default: '驳回'
+});
+const { loading: backFormLoading, startLoading: startBackFormLoading, endLoading: endBackFormLoading } = useLoading();
+const { loading: backBtnLoading, startLoading: startBackBtnLoading, endLoading: endBackBtnLoading } = useLoading();
+
+const accept = ref<string>('.doc,.docx,.xls,.xlsx,.ppt,.pptx,.txt,.pdf,.jpg,.jpeg,.png,.gif,.bmp,.webp');
+
+type Model = Api.Workflow.BackOperateParams;
+
+const backModel = reactive(createBackModel());
+
+function createBackModel(): Model {
+  return {
+    taskId: null,
+    fileId: null,
+    messageType: ['1'],
+    nodeCode: null,
+    message: null,
+    notice: null,
+    variables: null
+  };
+}
+const fileList = ref<UploadFileInfo[]>([]);
+
+const backTaskNodeOptions = ref<CommonType.Option<string, string>[]>([]);
+
+async function initDefault() {
+  startBackFormLoading();
+  startBackBtnLoading();
+  Object.assign(backModel, createBackModel());
+  const { error, data } = await fetchGetBackNode(props.task.definitionId, props.task.nodeCode);
+  endBackFormLoading();
+  endBackBtnLoading();
+  if (error) return;
+  backTaskNodeOptions.value = data.map(item => ({
+    label: item.nodeName,
+    value: item.nodeCode
+  }));
+  backModel.nodeCode = data[0].nodeCode;
+}
+
+async function handleSubmit() {
+  backModel.taskId = props.task.id;
+  if (fileList.value?.length) {
+    const fileIds = fileList.value.map(item => item.id);
+    backModel.fileId = fileIds.join(',');
+  }
+  window.$dialog?.warning({
+    title: '提示',
+    content: `是否确认驳回?`,
+    positiveText: `确认驳回`,
+    positiveButtonProps: {
+      type: 'primary'
+    },
+    negativeText: '取消',
+    onPositiveClick: async () => {
+      startBackBtnLoading();
+      startBackFormLoading();
+      const { error } = await fetchBackTask(backModel);
+      endBackBtnLoading();
+      endBackFormLoading();
+      if (error) return;
+      window.$message?.success('驳回成功');
+      closeDrawer();
+      emit('submit');
+    }
+  });
+}
+
+function closeDrawer() {
+  visible.value = false;
+}
+
+watch(visible, () => {
+  if (visible.value) {
+    initDefault();
+  }
+});
+</script>
+
+<template>
+  <NModal v-model:show="visible" preset="card" class="w-800px" :title="title" :native-scrollbar="false" closable>
+    <NSpin :show="backFormLoading">
+      <NForm v-if="task.flowStatus === 'waiting'" :model="backModel">
+        <NFormItem label="驳回节点" path="nodeCode">
+          <NSelect v-model:value="backModel.nodeCode" :options="backTaskNodeOptions" />
+        </NFormItem>
+        <NFormItem label="通知方式" path="messageType">
+          <NCheckboxGroup v-model:value="backModel.messageType">
+            <NSpace item-style="display: flex;">
+              <NCheckbox
+                v-for="item in messageTypeOptions"
+                :key="item.value"
+                :disabled="item.value === '1'"
+                :value="item.value"
+                :label="item.label"
+              />
+            </NSpace>
+          </NCheckboxGroup>
+        </NFormItem>
+        <NFormItem label="附件" path="fileId">
+          <FileUpload v-model:file-list="fileList" :file-size="20" :max="20" upload-type="file" :accept="accept" />
+        </NFormItem>
+        <NFormItem label="审批意见" path="message">
+          <NInput v-model:value="backModel.message" type="textarea" />
+        </NFormItem>
+      </NForm>
+    </NSpin>
+    <template #footer>
+      <NSpace justify="end" :size="16">
+        <NButton @click="closeDrawer">{{ $t('common.cancel') }}</NButton>
+        <NButton :loading="backBtnLoading" type="primary" @click="handleSubmit">{{ $t('common.confirm') }}</NButton>
+      </NSpace>
+    </template>
+  </NModal>
+</template>
diff --git a/src/components/custom/workflow/flow-intervene-modal.vue b/src/components/custom/workflow/flow-intervene-modal.vue
index c878ace5..37f3b401 100644
--- a/src/components/custom/workflow/flow-intervene-modal.vue
+++ b/src/components/custom/workflow/flow-intervene-modal.vue
@@ -2,6 +2,7 @@
 import { computed, reactive, ref, watch } from 'vue';
 import { useBoolean, useLoading } from '@sa/hooks';
 import { fetchGetTask, fetchTaskOperate, fetchTerminateTask } from '@/service/api/workflow/task';
+import ReduceSignatureModal from './reduce-signature-modal.vue';
 
 defineOptions({
   name: 'FlowInterveneModal'
@@ -59,10 +60,6 @@ function createDefaultTerminateModel(): TerminateModel {
 }
 
 function handleTransferConfirm(ids: CommonType.IdType[]) {
-  if (ids.length === 0) {
-    window.$message?.error('请选择转办用户');
-    return;
-  }
   model.userId = ids[0];
   model.taskId = props.taskId;
   window.$dialog?.warning({
@@ -84,10 +81,6 @@ function handleTransferConfirm(ids: CommonType.IdType[]) {
 }
 
 function handleAddSignatureConfirm(ids: CommonType.IdType[]) {
-  if (ids.length === 0) {
-    window.$message?.error('请选择加签用户');
-    return;
-  }
   model.userIds = ids;
   window.$dialog?.warning({
     title: '提示',
@@ -111,7 +104,7 @@ function handleTerminate() {
   terminateModel.taskId = props.taskId;
   window.$dialog?.warning({
     title: '提示',
-    content: '是否确认中止?',
+    content: '是否确认终止?',
     positiveText: '确认',
     positiveButtonProps: {
       type: 'primary'
@@ -120,7 +113,7 @@ function handleTerminate() {
     onPositiveClick: async () => {
       const { error } = await fetchTerminateTask(terminateModel);
       if (error) return;
-      window.$message?.success('中止成功');
+      window.$message?.success('终止成功');
       visible.value = false;
       emit('refresh');
     }
@@ -189,7 +182,7 @@ watch(visible, () => {
         <NButton v-if="isWaiting && isTicketOrSignInstance" type="primary" @click="openReduceSignatureModal">
           减签
         </NButton>
-        <NButton v-if="isWaiting" type="error" @click="handleTerminate">中止</NButton>
+        <NButton v-if="isWaiting" type="error" @click="handleTerminate">终止</NButton>
       </NSpace>
     </template>
     <!-- 转办用户选择器 -->
@@ -202,7 +195,7 @@ watch(visible, () => {
       @confirm="handleAddSignatureConfirm"
     />
     <!-- 减签用户 -->
-    <ReduceSignatureDrawer
+    <ReduceSignatureModal
       v-model:visible="reduceSignatureVisible"
       :task="taskInfo!"
       @reduce-submit="handleReduceSubmit"
diff --git a/src/components/custom/workflow/flow-task-approval-modal.vue b/src/components/custom/workflow/flow-task-approval-modal.vue
index 6138727a..baa047bd 100644
--- a/src/components/custom/workflow/flow-task-approval-modal.vue
+++ b/src/components/custom/workflow/flow-task-approval-modal.vue
@@ -1,19 +1,27 @@
 <script setup lang="ts">
-import { reactive, ref, watch } from 'vue';
+import { computed, reactive, ref, watch } from 'vue';
 import type { UploadFileInfo } from 'naive-ui';
 import { useBoolean, useLoading } from '@sa/hooks';
 import { messageTypeOptions } from '@/constants/workflow';
-import { fetchCompleteTask, fetchGetTask, fetchGetkNextNode } from '@/service/api/workflow';
+import {
+  fetchCompleteTask,
+  fetchGetTask,
+  fetchGetkNextNode,
+  fetchTaskOperate,
+  fetchTerminateTask
+} from '@/service/api/workflow';
 import FileUpload from '@/components/custom/file-upload.vue';
+import ReduceSignatureModal from './reduce-signature-modal.vue';
+import BackTaskModal from './back-task-modal.vue';
 
 defineOptions({
   name: 'FlowTaskApprovalModal'
 });
 
 interface Props {
-  /** the task id */
+  /** 任务id */
   taskId: CommonType.IdType;
-  /** the task variables */
+  /** 任务变量 */
   taskVariables: { [key: string]: any };
 }
 
@@ -32,6 +40,11 @@ const { loading: baseFormLoading, startLoading: startBaseFormLoading, endLoading
 const { loading: btnLoading, startLoading: startBtnLoading, endLoading: endBtnLoading } = useLoading();
 const { bool: copyVisible, setTrue: openCopyModal } = useBoolean();
 const { bool: assigneeVisible, setTrue: openAssigneeModal } = useBoolean();
+const { bool: delegateVisible, setTrue: openDelegateModal, setFalse: closeDelegateModal } = useBoolean();
+const { bool: transferVisible, setTrue: openTransferModal, setFalse: closeTransferModal } = useBoolean();
+const { bool: addSignatureVisible, setTrue: openAddSignatureModal, setFalse: closeAddSignatureModal } = useBoolean();
+const { bool: reduceSignatureVisible, setTrue: openReduceSignatureModal } = useBoolean();
+const { bool: backVisible, setTrue: openBackModal } = useBoolean();
 const title = defineModel<string>('title', {
   default: '流程发起'
 });
@@ -42,6 +55,8 @@ type Model = Api.Workflow.CompleteTaskOperateParams;
 
 const task = ref<Api.Workflow.Task>();
 
+const isWaiting = computed(() => task.value?.flowStatus === 'waiting');
+
 const model: Model = reactive(createDefaultModel());
 
 function createDefaultModel(): Model {
@@ -119,19 +134,18 @@ async function getTask() {
   }
   task.value = data;
   task.value.buttonList.forEach(item => {
-    buttonPerm[item.code as keyof ButtonPerm] = !item.show;
+    buttonPerm[item.code as keyof ButtonPerm] = item.show!;
   });
   endBtnLoading();
   const { error: nextNodeError, data: nextNodeData } = await fetchGetkNextNode({
     taskId: props.taskId,
     taskVariables: props.taskVariables
   });
+  endBaseFormLoading();
   if (nextNodeError) {
-    endBaseFormLoading();
     return;
   }
   nestNodeList.value = nextNodeData;
-  endBaseFormLoading();
 }
 
 async function handleSubmit() {
@@ -231,6 +245,118 @@ function handleAssigneeTagClose(code: string, index?: number) {
   }
 }
 
+interface TaskOperationOptions {
+  userIds: CommonType.IdType[];
+  operation: 'delegateTask' | 'transferTask' | 'addSignature';
+  confirmText: string;
+  successMessage: string;
+  closeModal: () => void;
+}
+
+function handleTaskOperationConfirm(options: TaskOperationOptions) {
+  const { userIds, operation, confirmText, successMessage, closeModal } = options;
+
+  const taskModel = {
+    taskId: props.taskId,
+    userId: userIds[0],
+    message: model.message
+  };
+
+  window.$dialog?.warning({
+    title: '提示',
+    content: `是否确认${confirmText}?`,
+    positiveText: `确认${confirmText}`,
+    positiveButtonProps: {
+      type: 'primary'
+    },
+    negativeText: '取消',
+    onPositiveClick: async () => {
+      startBtnLoading();
+      startBaseFormLoading();
+      const { error } = await fetchTaskOperate(taskModel, operation);
+      endBtnLoading();
+      endBaseFormLoading();
+      if (error) return;
+      window.$message?.success(successMessage);
+      closeModal();
+      visible.value = false;
+      emit('finished');
+    }
+  });
+}
+
+// 委托
+function handleDelegateConfirm(userIds: CommonType.IdType[]) {
+  handleTaskOperationConfirm({
+    userIds,
+    operation: 'delegateTask',
+    confirmText: '委托',
+    successMessage: '委托成功',
+    closeModal: closeDelegateModal
+  });
+}
+
+// 转办
+function handleTransferConfirm(userIds: CommonType.IdType[]) {
+  handleTaskOperationConfirm({
+    userIds,
+    operation: 'transferTask',
+    confirmText: '转办',
+    successMessage: '转办成功',
+    closeModal: closeTransferModal
+  });
+}
+
+// 加签
+function handleAddSignatureConfirm(userIds: CommonType.IdType[]) {
+  handleTaskOperationConfirm({
+    userIds,
+    operation: 'addSignature',
+    confirmText: '加签',
+    successMessage: '加签成功',
+    closeModal: closeAddSignatureModal
+  });
+}
+
+// 减签
+function handleReduceSubmit() {
+  visible.value = false;
+  emit('finished');
+}
+
+// 终止
+function handleTerminate() {
+  const terminateModel = {
+    taskId: props.taskId,
+    comment: model.message
+  };
+  window.$dialog?.warning({
+    title: '提示',
+    content: '是否确认终止?',
+    positiveText: '确认',
+    positiveButtonProps: {
+      type: 'primary'
+    },
+    negativeText: '取消',
+    onPositiveClick: async () => {
+      startBtnLoading();
+      startBaseFormLoading();
+      const { error } = await fetchTerminateTask(terminateModel);
+      endBtnLoading();
+      endBaseFormLoading();
+      if (error) return;
+      window.$message?.success('终止成功');
+      visible.value = false;
+      emit('finished');
+    }
+  });
+}
+
+function handleBackSubmit() {
+  visible.value = false;
+  emit('finished');
+}
+
 watch(visible, () => {
   if (visible.value) {
     initDefault();
@@ -291,22 +417,80 @@ watch(visible, () => {
             </div>
           </NSpace>
         </NFormItem>
-        <NFormItem v-if="task?.flowStatus === 'waiting'" label="审批意见" path="message">
+        <NFormItem v-if="isWaiting" label="审批意见" path="message">
           <NInput v-model:value="model.message" type="textarea" />
         </NFormItem>
       </NForm>
-      <div class="flex justify-end gap-12px">
-        <NButton @click="visible = false">取消</NButton>
-        <NButton :loading="btnLoading" type="primary" @click="handleSubmit">提交</NButton>
-      </div>
     </NSpin>
+    <template #footer>
+      <NSpace justify="end" :size="16">
+        <NButton @click="visible = false">{{ $t('common.cancel') }}</NButton>
+        <!-- 委托 -->
+        <NButton v-if="isWaiting && buttonPerm.trust" :loading="btnLoading" type="warning" @click="openDelegateModal">
+          委托
+        </NButton>
+        <!-- 转办 -->
+        <NButton
+          v-if="isWaiting && buttonPerm.transfer"
+          :loading="btnLoading"
+          type="warning"
+          @click="openTransferModal"
+        >
+          转办
+        </NButton>
+        <!-- 加签 -->
+        <NButton
+          v-if="isWaiting && buttonPerm.addSign && Number(task?.nodeRatio) > 0"
+          :loading="btnLoading"
+          type="warning"
+          @click="openAddSignatureModal"
+        >
+          加签
+        </NButton>
+        <!-- 减签 -->
+        <NButton
+          v-if="isWaiting && buttonPerm.subSign && Number(task?.nodeRatio) > 0"
+          :loading="btnLoading"
+          type="warning"
+          @click="openReduceSignatureModal"
+        >
+          减签
+        </NButton>
+        <!-- 终止 -->
+        <NButton v-if="isWaiting && buttonPerm.termination" :loading="btnLoading" type="error" @click="handleTerminate">
+          终止
+        </NButton>
+        <!-- 驳回 -->
+        <NButton v-if="isWaiting && buttonPerm.back" :loading="btnLoading" type="error" @click="openBackModal">
+          驳回
+        </NButton>
+        <NButton :loading="btnLoading" type="primary" @click="handleSubmit">提交</NButton>
+      </NSpace>
+    </template>
+    <!-- 抄送人员选择 -->
+    <UserSelectModal
+      v-model:visible="copyVisible"
+      :row-keys="selectCopyUserIds"
+      multiple
+      @confirm="handleCopyConfirm"
+    />
+    <!-- 下一步审批人员选择 -->
+    <UserSelectModal
+      v-model:visible="assigneeVisible"
+      :row-keys="selectAssigneeIds"
+      :search-user-ids="assigneeSearchUserIds"
+      multiple
+      @confirm="handleAssigneeConfirm"
+    />
+    <!-- 转办 -->
+    <UserSelectModal v-model:visible="transferVisible" @confirm="handleTransferConfirm" />
+    <!-- 委托 -->
+    <UserSelectModal v-model:visible="delegateVisible" @confirm="handleDelegateConfirm" />
+    <!-- 加签 -->
+    <UserSelectModal v-model:visible="addSignatureVisible" @confirm="handleAddSignatureConfirm" />
+    <!-- 减签 -->
+    <ReduceSignatureModal v-model:visible="reduceSignatureVisible" :task="task!" @reduce-submit="handleReduceSubmit" />
+    <!-- 驳回 -->
+    <BackTaskModal v-model:visible="backVisible" :task="task!" @submit="handleBackSubmit" />
   </NModal>
-  <UserSelectModal v-model:visible="copyVisible" :row-keys="selectCopyUserIds" multiple @confirm="handleCopyConfirm" />
-  <UserSelectModal
-    v-model:visible="assigneeVisible"
-    :row-keys="selectAssigneeIds"
-    :search-user-ids="assigneeSearchUserIds"
-    multiple
-    @confirm="handleAssigneeConfirm"
-  />
 </template>
diff --git a/src/components/custom/workflow/reduce-signature-drawer.vue b/src/components/custom/workflow/reduce-signature-modal.vue
similarity index 96%
rename from src/components/custom/workflow/reduce-signature-drawer.vue
rename to src/components/custom/workflow/reduce-signature-modal.vue
index 51fd064b..233f0699 100644
--- a/src/components/custom/workflow/reduce-signature-drawer.vue
+++ b/src/components/custom/workflow/reduce-signature-modal.vue
@@ -72,8 +72,8 @@ const columns = ref<NaiveUI.TableColumn<UserTaskModel>[]>([
           text
           type="error"
           icon="material-symbols:delete-outline"
-          tooltipContent={$t('common.delete')}
-          popconfirmContent={$t('common.confirmDelete')}
+          tooltipContent={'减签'}
+          popconfirmContent={'是否确认减签?'}
           onPositiveClick={() => handleReduceSignature([row.userId])}
         />
       );
@@ -128,7 +128,7 @@ watch(visible, async () => {
           <template #icon>
             <icon-material-symbols:delete-outline class="text-icon" />
           </template>
-          删除
+          批量减签
         </NButton>
       </NSpace>
       <NDataTable
diff --git a/src/service/api/workflow/task.ts b/src/service/api/workflow/task.ts
index 028bbd82..fc5384d7 100644
--- a/src/service/api/workflow/task.ts
+++ b/src/service/api/workflow/task.ts
@@ -28,7 +28,7 @@ export function fetchGetkNextNode(data: Api.Workflow.TaskNextNodeSearchParams) {
 
 /** 完成任务 */
 export function fetchCompleteTask(data: Api.Workflow.CompleteTaskOperateParams) {
-  return request<Api.Workflow.Task>({
+  return request<boolean>({
     url: '/workflow/task/completeTask',
     method: 'post',
     data
@@ -55,7 +55,7 @@ export function fetchGetAllFinishedTask(data: Api.Workflow.TaskSearchParams) {
 
 /** 任务操作 */
 export function fetchTaskOperate(data: Api.Workflow.TaskOperateParams, operateType: Api.Workflow.TaskOperateType) {
-  return request<Api.Workflow.Task>({
+  return request<boolean>({
     url: `/workflow/task/taskOperation/${operateType}`,
     method: 'post',
     data
@@ -87,3 +87,18 @@ export function fetchGetTaskWaitList(data: Api.Workflow.TaskSearchParams) {
     params: data
   });
 }
+/** 获取可驳回节点 */
+export function fetchGetBackNode(definitionId: CommonType.IdType, nodeCode: string) {
+  return request<Api.Workflow.FlowNodeList>({
+    url: `/workflow/task/getBackTaskNode/${definitionId}/${nodeCode}`,
+    method: 'get'
+  });
+}
+/** 驳回任务 */
+export function fetchBackTask(data: Api.Workflow.BackOperateParams) {
+  return request<boolean>({
+    url: '/workflow/task/backProcess',
+    method: 'post',
+    data
+  });
+}
diff --git a/src/typings/api/workflow.api.d.ts b/src/typings/api/workflow.api.d.ts
index b7c60886..fa8f1c06 100644
--- a/src/typings/api/workflow.api.d.ts
+++ b/src/typings/api/workflow.api.d.ts
@@ -461,7 +461,7 @@ declare namespace Api {
     }>;
 
     /** 工作流节点 */
-    type FlowNode = Common.CommonRecord<{
+    type FlowNode = Common.CommonTenantRecord<{
       /** 节点ID */
       id: CommonType.IdType;
       /** 删除标志 */
@@ -502,5 +502,16 @@ declare namespace Api {
 
     /** 工作流节点列表 */
     type FlowNodeList = FlowNode[];
+
+    /** 驳回操作参数 */
+    type BackOperateParams = CommonType.RecordNullable<{
+      taskId: CommonType.IdType;
+      fileId: CommonType.IdType;
+      messageType: string[];
+      nodeCode: string;
+      message: string;
+      notice: string;
+      variables: { [key: string]: any };
+    }>;
   }
 }
diff --git a/src/typings/components.d.ts b/src/typings/components.d.ts
index 3e48ee87..ddc0b483 100644
--- a/src/typings/components.d.ts
+++ b/src/typings/components.d.ts
@@ -10,6 +10,7 @@ declare module 'vue' {
   export interface GlobalComponents {
     AppProvider: typeof import('./../components/common/app-provider.vue')['default']
     ApprovalInfoPanel: typeof import('./../components/custom/workflow/approval-info-panel.vue')['default']
+    BackTaskModal: typeof import('./../components/custom/workflow/back-task-modal.vue')['default']
     BetterScroll: typeof import('./../components/custom/better-scroll.vue')['default']
     BooleanTag: typeof import('./../components/custom/boolean-tag.vue')['default']
     ButtonIcon: typeof import('./../components/custom/button-icon.vue')['default']
@@ -145,7 +146,7 @@ declare module 'vue' {
     OssUpload: typeof import('./../components/custom/oss-upload.vue')['default']
     PinToggler: typeof import('./../components/common/pin-toggler.vue')['default']
     PostSelect: typeof import('./../components/custom/post-select.vue')['default']
-    ReduceSignatureDrawer: typeof import('./../components/custom/workflow/reduce-signature-drawer.vue')['default']
+    ReduceSignatureModal: typeof import('./../components/custom/workflow/reduce-signature-modal.vue')['default']
     ReloadButton: typeof import('./../components/common/reload-button.vue')['default']
     RoleSelect: typeof import('./../components/custom/role-select.vue')['default']
     RouterLink: typeof import('vue-router')['RouterLink']