diff --git a/apps/backend/src/repositories/worker-platform/work-order-repo.ts b/apps/backend/src/repositories/worker-platform/work-order-repo.ts
index ed1cc0e3..84007b55 100644
--- a/apps/backend/src/repositories/worker-platform/work-order-repo.ts
+++ b/apps/backend/src/repositories/worker-platform/work-order-repo.ts
@@ -1295,6 +1295,97 @@ export async function unassignWorkOrder(input: {
   })
 }
 
+export async function cancelAssignedWorkOrder(input: {
+  workOrderId: number
+  now: string
+}): Promise<{
+  order: WorkOrderRow | null
+  failureReason: 'work_order_not_in_progress' | 'work_order_no_worker' | null
+}> {
+  return withTransaction(async (client) => {
+    const currentResult = await client.query<WorkOrderRow>(
+      `
+        SELECT *
+        FROM work_orders
+        WHERE id = $1
+        FOR UPDATE
+      `,
+      [input.workOrderId],
+    )
+    const workOrder = currentResult.rows[0] || null
+    if (!workOrder || workOrder.status !== 'in_progress') {
+      return { order: null, failureReason: 'work_order_not_in_progress' }
+    }
+    const workerId = Number(workOrder.assigned_worker_id || 0)
+    if (!workerId) {
+      return { order: null, failureReason: 'work_order_no_worker' }
+    }
+
+    await ensureWorkerWalletWithClient(client, workerId, input.now)
+    const wallet = await getWorkerWalletWithClient(client, workerId)
+    const releaseAmount = Math.min(
+      await getOutstandingDepositAmountWithClient(client, workerId, input.workOrderId),
+      Number(wallet?.frozen_deposit_amount || 0),
+    )
+
+    await client.query(
+      `
+        UPDATE work_orders
+        SET
+          status = 'cancelled',
+          assigned_worker_id = NULL,
+          assigned_at = NULL,
+          deadline_at = NULL,
+          published_at = NULL,
+          updated_at = $1
+        WHERE id = $2
+      `,
+      [input.now, input.workOrderId],
+    )
+
+    if (releaseAmount > 0) {
+      const nextAvailable = Number(wallet?.available_amount || 0) + releaseAmount
+      const nextFrozen = Math.max(
+        0,
+        Number(wallet?.frozen_deposit_amount || 0) - releaseAmount,
+      )
+      await client.query(
+        `
+          UPDATE worker_wallets
+          SET available_amount = $1, frozen_deposit_amount = $2, updated_at = $3
+          WHERE worker_id = $4
+        `,
+        [nextAvailable, nextFrozen, input.now, workerId],
+      )
+      await client.query(
+        `
+          INSERT INTO worker_wallet_ledgers (
+            worker_id, ledger_type, amount, balance_after, frozen_after,
+            related_work_order_id, note, payload_json, created_at
+          ) VALUES ($1, 'deposit_release', $2, $3, $4, $5, '后台撤单退还押金', '{}'::jsonb, $6)
+        `,
+        [workerId, releaseAmount, nextAvailable, nextFrozen, input.workOrderId, input.now],
+      )
+    }
+
+    await createWorkOrderEventWithClient(client, {
+      workOrderId: input.workOrderId,
+      actorType: 'admin',
+      actorId: '',
+      eventType: 'cancelled_by_admin',
+      fromStatus: 'in_progress',
+      toStatus: 'cancelled',
+      payloadJson: JSON.stringify({ workerId, releaseAmount }),
+      now: input.now,
+    })
+
+    return {
+      order: await getWorkOrderByIdWithClient(client, input.workOrderId),
+      failureReason: null,
+    }
+  })
+}
+
 export async function countWorkerCancellationsSince(
   workerId: number | string,
   sinceIso: string,
diff --git a/apps/backend/src/routes/admin/worker-platform.ts b/apps/backend/src/routes/admin/worker-platform.ts
index 24ff2798..03155d80 100644
--- a/apps/backend/src/routes/admin/worker-platform.ts
+++ b/apps/backend/src/routes/admin/worker-platform.ts
@@ -4,6 +4,7 @@ import {
   acceptAdminWorkOrder,
   acceptAdminWorkOrders,
   assignAdminWorkOrderToWorker,
+  cancelAdminWorkOrder,
   unassignAdminWorkOrder,
   creditAdminWorkerWallet,
   createAdminMockWorkOrder,
@@ -382,6 +383,22 @@ router.post(
   }),
 )
 
+router.post(
+  '/worker-platform/orders/:workOrderId/cancel',
+  requireAdminRoles(['admin', 'operator', 'support']),
+  createJsonHandler((req) => cancelAdminWorkOrder(String(req.params.workOrderId || '')), {
+    successMessage: '订单已撤单，打手额度已恢复',
+    errorMessage: '撤单失败',
+    scope: '[admin/worker-platform/orders/:workOrderId/cancel]',
+    audit: (req, data) => ({
+      action: 'work_order_cancelled',
+      targetType: 'work_order',
+      targetId: String(req.params.workOrderId || ''),
+      data: data && typeof data === 'object' ? (data as Record<string, unknown>) : {},
+    }),
+  }),
+)
+
 router.delete(
   '/worker-platform/orders/:workOrderId',
   requireAdminRoles(['admin', 'operator']),
@@ -416,7 +433,7 @@ router.post(
 
 router.post(
   '/worker-platform/orders/:workOrderId/unpublish',
-  requireAdminRoles(['admin', 'operator']),
+  requireAdminRoles(['admin', 'operator', 'support']),
   createJsonHandler((req) => unpublishAdminWorkOrder(String(req.params.workOrderId || '')), {
     successMessage: '订单已撤回到未分配',
     errorMessage: '下架接单订单失败',
diff --git a/apps/backend/src/services/worker-platform/admin-service.ts b/apps/backend/src/services/worker-platform/admin-service.ts
index b6568eb8..c4f54d49 100644
--- a/apps/backend/src/services/worker-platform/admin-service.ts
+++ b/apps/backend/src/services/worker-platform/admin-service.ts
@@ -6,6 +6,7 @@ import {
   acceptWorkOrderAndSettle,
   addWorkerWalletCredit,
   assignWorkOrderToWorker,
+  cancelAssignedWorkOrder,
   unassignWorkOrder,
   countWorkerAcceptedOrders,
   countWorkerActiveOrders,
@@ -1240,6 +1241,42 @@ export async function unassignAdminWorkOrder(workOrderId: number | string) {
   return { order: mapWorkOrderAdmin(updated) }
 }
 
+export async function cancelAdminWorkOrder(workOrderId: number | string) {
+  const workOrder = await getRequiredWorkOrder(workOrderId)
+  if (
+    workOrder.status !== WORK_ORDER_STATUS.IN_PROGRESS ||
+    !workOrder.assigned_worker_id
+  ) {
+    throw createHttpError('只有代练中且已接单的订单可以撤单', {
+      statusCode: 409,
+      errorCode: 'work_order_cancel_status_invalid',
+    })
+  }
+  const { order: updated, failureReason } = await cancelAssignedWorkOrder({
+    workOrderId: workOrder.id,
+    now: nowIso(),
+  })
+  if (failureReason === 'work_order_not_in_progress') {
+    throw createHttpError('订单状态已变化，无法撤单', {
+      statusCode: 409,
+      errorCode: 'work_order_cancel_status_invalid',
+    })
+  }
+  if (failureReason === 'work_order_no_worker') {
+    throw createHttpError('该订单尚未被打手接取', {
+      statusCode: 409,
+      errorCode: 'work_order_cancel_no_worker',
+    })
+  }
+  if (!updated) {
+    throw createHttpError('撤单失败，订单状态可能已变化', {
+      statusCode: 409,
+      errorCode: 'work_order_cancel_conflict',
+    })
+  }
+  return { order: mapWorkOrderAdmin(updated) }
+}
+
 export async function getAdminWorkerPlatformSummary() {
   const [pendingWorkers, pendingMaterial, openOrders, inProgressOrders] = await Promise.all([
     listWorkerUsers({ page: 1, pageSize: 1, status: 'pending_review' }),
diff --git a/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx b/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
index fb321a04..45b518c8 100644
--- a/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
+++ b/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
@@ -46,8 +46,8 @@ import {
   acceptAdminWorkOrder,
   acceptAdminWorkOrders,
   assignAdminWorkOrderToWorker,
+  cancelAdminWorkOrder,
   createAdminMockWorkOrder,
-  unassignAdminWorkOrder,
   creditAdminWorkerWallet,
   deductAdminWorkOrderPendingDeposit,
   deleteAdminWorkCategory,
@@ -692,25 +692,25 @@ export default function WorkOrdersPanel() {
                 const assignedWorker = row.worker
                 if (!assignedWorker) return
                 modal.confirm({
-                  title: '取消指派该打手？',
+                  title: '确认撤单？',
                   content: (
                     <span>
-                      将 {assignedWorker.displayName || assignedWorker.username} 的接单撤回，订单回到未分配，
-                      可重新指派给其他打手；冻结押金将退还。
+                      将取消 {assignedWorker.displayName || assignedWorker.username} 正在代练的订单，订单不会重新发布到大厅，
+                      打手接单额度和冻结押金将恢复。
                     </span>
                   ),
-                  okText: '确认取消指派',
+                  okText: '确认撤单',
                   cancelText: '取消',
                   okButtonProps: { danger: true },
                   onOk: () =>
                     runAction(
-                      () => unassignAdminWorkOrder(row.workOrderId),
-                      '已取消指派',
+                      () => cancelAdminWorkOrder(row.workOrderId),
+                      '已撤单并恢复打手额度',
                     ),
                 })
               }}
             >
-              取消指派
+              撤单
             </Button>
           ) : null}
           {['pending_material', 'in_progress'].includes(row.status) ? (
diff --git a/apps/frontend/src/services/admin/worker-platform.ts b/apps/frontend/src/services/admin/worker-platform.ts
index f979142f..0a97fc97 100644
--- a/apps/frontend/src/services/admin/worker-platform.ts
+++ b/apps/frontend/src/services/admin/worker-platform.ts
@@ -149,6 +149,12 @@ export function unassignAdminWorkOrder(workOrderId: number) {
   )
 }
 
+export function cancelAdminWorkOrder(workOrderId: number) {
+  return apiPost<{ order: WorkOrder }>(
+    `/api/v1/admin/worker-platform/orders/${workOrderId}/cancel`,
+  )
+}
+
 export function creditAdminWorkerWallet(
   workerId: number,
   payload: { amount: number; note?: string },