diff --git a/apps/backend/src/services/worker-platform/admin-service.ts b/apps/backend/src/services/worker-platform/admin-service.ts
index 1378ebf8..2126cb0c 100644
--- a/apps/backend/src/services/worker-platform/admin-service.ts
+++ b/apps/backend/src/services/worker-platform/admin-service.ts
@@ -10,7 +10,6 @@ import {
   createWorkProductMatchLog,
   createWorkOrder,
   createWorkOrderEvent,
-  deductPendingDepositUnfreeze,
   getWorkOrderByOrderItemId,
   listWorkOrders,
   listWorkProductRules,
@@ -69,66 +68,7 @@ export {
   reviewAdminWorkerCancelRequest,
 } from './admin-worker-cancel-service.js'
 
-export async function deductAdminWorkOrderPendingDeposit(
-  workOrderId: number | string,
-  payload: JsonObject = {},
-  actorName = '',
-) {
-  const workOrder = await getRequiredWorkOrder(workOrderId)
-  if (workOrder.status !== WORK_ORDER_STATUS.ACCEPTED) {
-    throw createHttpError('只有已验收的工单可以扣减待解冻押金', {
-      statusCode: 409,
-      errorCode: 'work_order_deduct_pending_status_invalid',
-    })
-  }
-  const amount = normalizeAmountFen(payload.amount ?? payload.amountYuan, 0)
-  const note = String(payload.note || payload.reason || '').trim()
-  if (amount <= 0) {
-    throw createHttpError('扣减金额必须大于 0', {
-      statusCode: 400,
-      errorCode: 'work_order_deduct_pending_amount_invalid',
-    })
-  }
-  if (!note) {
-    throw createHttpError('请填写扣减原因', {
-      statusCode: 400,
-      errorCode: 'work_order_deduct_pending_note_required',
-    })
-  }
-  const result = await deductPendingDepositUnfreeze({
-    workOrderId: workOrder.id,
-    amount,
-    note,
-    now: nowIso(),
-  })
-  if (result.failureReason === 'no_pending_deposit') {
-    throw createHttpError('该工单没有待解冻的押金', {
-      statusCode: 409,
-      errorCode: 'work_order_deduct_pending_none',
-    })
-  }
-  if (result.failureReason === 'amount_exceeds_pending') {
-    throw createHttpError('扣减金额超过该工单待解冻押金总额', {
-      statusCode: 409,
-      errorCode: 'work_order_deduct_pending_amount_exceeds',
-    })
-  }
-  await createWorkOrderEvent({
-    workOrderId: workOrder.id,
-    actorType: 'admin',
-    actorId: actorName,
-    eventType: 'pending_deposit_deducted',
-    fromStatus: workOrder.status,
-    toStatus: workOrder.status,
-    payloadJson: JSON.stringify({ amount, note }),
-    now: nowIso(),
-  })
-  publishWorkOrderRealtimeChange({
-    workOrderId: Number(workOrder.id),
-    workerIds: await resolveWorkOrderRealtimeWorkerIds(workOrder),
-  })
-  return { deductedAmount: result.deductedAmount }
-}
+export { deductAdminWorkOrderPendingDeposit } from './admin-work-order-deposit-service.js'
 
 export {
   getAdminWorkOrderSharing,
diff --git a/apps/backend/src/services/worker-platform/admin-work-order-deposit-service.ts b/apps/backend/src/services/worker-platform/admin-work-order-deposit-service.ts
new file mode 100644
index 00000000..6ca6abfb
--- /dev/null
+++ b/apps/backend/src/services/worker-platform/admin-work-order-deposit-service.ts
@@ -0,0 +1,73 @@
+import { WORK_ORDER_STATUS } from '../../domain/work-order-status.js'
+import {
+  createWorkOrderEvent,
+  deductPendingDepositUnfreeze,
+} from '../../repositories/worker-platform/index.js'
+import type { JsonObject } from '../../types/json.js'
+import { createHttpError } from '../../utils/http.js'
+import { nowIso } from '../../utils/time.js'
+import { publishWorkOrderRealtimeChange } from '../realtime/realtime-event-service.js'
+import { normalizeAmountFen } from './mappers.js'
+import { resolveWorkOrderRealtimeWorkerIds } from './admin-work-order-realtime-service.js'
+import { getRequiredWorkOrder } from './worker-session-context-service.js'
+
+export async function deductAdminWorkOrderPendingDeposit(
+  workOrderId: number | string,
+  payload: JsonObject = {},
+  actorName = '',
+) {
+  const workOrder = await getRequiredWorkOrder(workOrderId)
+  if (workOrder.status !== WORK_ORDER_STATUS.ACCEPTED) {
+    throw createHttpError('只有已验收的工单可以扣减待解冻押金', {
+      statusCode: 409,
+      errorCode: 'work_order_deduct_pending_status_invalid',
+    })
+  }
+  const amount = normalizeAmountFen(payload.amount ?? payload.amountYuan, 0)
+  const note = String(payload.note || payload.reason || '').trim()
+  if (amount <= 0) {
+    throw createHttpError('扣减金额必须大于 0', {
+      statusCode: 400,
+      errorCode: 'work_order_deduct_pending_amount_invalid',
+    })
+  }
+  if (!note) {
+    throw createHttpError('请填写扣减原因', {
+      statusCode: 400,
+      errorCode: 'work_order_deduct_pending_note_required',
+    })
+  }
+  const result = await deductPendingDepositUnfreeze({
+    workOrderId: workOrder.id,
+    amount,
+    note,
+    now: nowIso(),
+  })
+  if (result.failureReason === 'no_pending_deposit') {
+    throw createHttpError('该工单没有待解冻的押金', {
+      statusCode: 409,
+      errorCode: 'work_order_deduct_pending_none',
+    })
+  }
+  if (result.failureReason === 'amount_exceeds_pending') {
+    throw createHttpError('扣减金额超过该工单待解冻押金总额', {
+      statusCode: 409,
+      errorCode: 'work_order_deduct_pending_amount_exceeds',
+    })
+  }
+  await createWorkOrderEvent({
+    workOrderId: workOrder.id,
+    actorType: 'admin',
+    actorId: actorName,
+    eventType: 'pending_deposit_deducted',
+    fromStatus: workOrder.status,
+    toStatus: workOrder.status,
+    payloadJson: JSON.stringify({ amount, note }),
+    now: nowIso(),
+  })
+  publishWorkOrderRealtimeChange({
+    workOrderId: Number(workOrder.id),
+    workerIds: await resolveWorkOrderRealtimeWorkerIds(workOrder),
+  })
+  return { deductedAmount: result.deductedAmount }
+}
diff --git a/apps/backend/src/services/worker-platform/index.ts b/apps/backend/src/services/worker-platform/index.ts
index b4db2c6f..da095010 100644
--- a/apps/backend/src/services/worker-platform/index.ts
+++ b/apps/backend/src/services/worker-platform/index.ts
@@ -35,6 +35,7 @@ export * from './admin-mock-work-order-service.js'
 export * from './admin-work-order-management-service.js'
 export * from './admin-worker-platform-summary-service.js'
 export * from './admin-work-order-assignment-service.js'
+export * from './admin-work-order-deposit-service.js'
 export {
   acceptAdminWorkOrder,
   acceptAdminWorkOrderShare,