diff --git a/apps/backend/src/routes/admin/worker-platform.ts b/apps/backend/src/routes/admin/worker-platform.ts
index 235dc59f..4f84a85c 100644
--- a/apps/backend/src/routes/admin/worker-platform.ts
+++ b/apps/backend/src/routes/admin/worker-platform.ts
@@ -328,7 +328,10 @@ router.put(
   '/worker-platform/orders/:workOrderId',
   requireAdminRoles(['admin', 'operator', 'support']),
   createJsonHandler(
-    (req) => updateAdminWorkOrder(String(req.params.workOrderId || ''), req.body || {}),
+    (req) =>
+      updateAdminWorkOrder(String(req.params.workOrderId || ''), req.body || {}, {
+        canEditRequirementFields: req.adminSession?.role !== 'support',
+      }),
     {
       successMessage: '工单信息已保存',
       errorMessage: '保存工单信息失败',
diff --git a/apps/backend/src/services/worker-platform/admin-service.ts b/apps/backend/src/services/worker-platform/admin-service.ts
index 30ad23af..e1a4e286 100644
--- a/apps/backend/src/services/worker-platform/admin-service.ts
+++ b/apps/backend/src/services/worker-platform/admin-service.ts
@@ -872,6 +872,7 @@ export async function createAdminMockWorkOrder(payload: JsonObject = {}) {
 export async function updateAdminWorkOrder(
   workOrderId: number | string,
   payload: JsonObject = {},
+  options: { canEditRequirementFields?: boolean } = {},
 ) {
   const workOrder = await getRequiredWorkOrder(workOrderId)
   if (
@@ -893,7 +894,10 @@ export async function updateAdminWorkOrder(
     })
   }
 
-  const fields = normalizeRequirementFieldsFromPayload(payload)
+  const fields =
+    options.canEditRequirementFields === false
+      ? resolveRequirementFields(workOrder)
+      : normalizeRequirementFieldsFromPayload(payload)
   const rewardAmount =
     payload.rewardAmount === undefined
       ? workOrder.reward_amount
diff --git a/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx b/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
index 67e686c3..12910326 100644
--- a/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
+++ b/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
@@ -91,6 +91,7 @@ import {
   ADMIN_DEFAULT_PAGE_SIZE,
   buildAdminTablePagination,
 } from '@/utils/admin-pagination'
+import { hasAdminRole } from '@/utils/admin-auth'
 import { formatAdminDateTime } from '@/utils/admin-time'
 import {
   DeadlineCountdown,
@@ -117,6 +118,7 @@ export default function WorkOrdersPanel() {
   const { message, modal } = App.useApp()
   const navigate = useNavigate()
   const queryClient = useQueryClient()
+  const canEditRequirementFields = hasAdminRole('operator')
   const [status, setStatus] = useState('')
   const [keyword, setKeyword] = useState('')
   const [keywordInput, setKeywordInput] = useState('')
@@ -430,7 +432,9 @@ export default function WorkOrdersPanel() {
             categoryId: values.categoryId || null,
             rewardAmount: Number(values.rewardAmount || 0),
             requiredDepositAmount: Number(values.requiredDepositAmount || 0),
-            fieldsText: String(values.fieldsText || ''),
+            ...(canEditRequirementFields
+              ? { fieldsText: String(values.fieldsText || '') }
+              : {}),
             timeoutMinutes: Math.max(0, Number(values.timeoutMinutes || 0)),
             timeoutPolicy: values.timeoutPolicy || 'reopen',
           }),
@@ -1089,7 +1093,7 @@ export default function WorkOrdersPanel() {
               name="fieldsText"
               extra="每行一个字段：key:名称，下拉项用 # 分隔（如 system:系统#安卓,苹果）"
             >
-              <Input.TextArea rows={5} />
+              <Input.TextArea rows={5} disabled={!canEditRequirementFields} />
             </Form.Item>
             <Form.Item
               label="任务时限"