diff --git a/apps/backend/src/db/migrations/031_work_order_search.sql b/apps/backend/src/db/migrations/031_work_order_search.sql
new file mode 100644
index 00000000..2adcd3c8
--- /dev/null
+++ b/apps/backend/src/db/migrations/031_work_order_search.sql
@@ -0,0 +1,22 @@
+-- 031_work_order_search.sql —— 扩展接单工单搜索字段并建立模糊检索索引。
+
+CREATE EXTENSION IF NOT EXISTS pg_trgm;
+
+CREATE INDEX IF NOT EXISTS idx_work_orders_search_text_trgm
+  ON work_orders USING gin (
+    LOWER(
+      COALESCE(work_order_no, '') || ' ' ||
+      COALESCE(platform_order_id, '') || ' ' ||
+      COALESCE(product_name, '') || ' ' ||
+      COALESCE(material_json->'collect'->'fields'->>'gameId', '') || ' ' ||
+      COALESCE(material_json->'collect'->'fields'->>'gameNickname', '') || ' ' ||
+      COALESCE(material_json->'collect'->'fields'->>'gameAccount', '') || ' ' ||
+      COALESCE(material_json->'collect'->'fields'->>'roleName', '') || ' ' ||
+      COALESCE(material_json->'fields'->>'gameId', '') || ' ' ||
+      COALESCE(material_json->'fields'->>'gameNickname', '') || ' ' ||
+      COALESCE(material_json->>'gameId', '') || ' ' ||
+      COALESCE(material_json->>'gameNickname', '')
+    ) gin_trgm_ops
+  );
+
+COMMENT ON INDEX idx_work_orders_search_text_trgm IS '接单工单模糊搜索：订单号、商品名、游戏 ID/昵称及历史字段';
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 30e44516..3345c035 100644
--- a/apps/backend/src/repositories/worker-platform/work-order-repo.ts
+++ b/apps/backend/src/repositories/worker-platform/work-order-repo.ts
@@ -65,6 +65,23 @@ type WorkOrderStatisticsRow = {
   refund_amount: number | string
 }
 
+/** 工单统一搜索字段，兼容当前资料结构和历史资料字段。 */
+function workOrderSearchExpression(alias = 'wo') {
+  return `LOWER(
+    COALESCE(${alias}.work_order_no, '') || ' ' ||
+    COALESCE(${alias}.platform_order_id, '') || ' ' ||
+    COALESCE(${alias}.product_name, '') || ' ' ||
+    COALESCE(${alias}.material_json->'collect'->'fields'->>'gameId', '') || ' ' ||
+    COALESCE(${alias}.material_json->'collect'->'fields'->>'gameNickname', '') || ' ' ||
+    COALESCE(${alias}.material_json->'collect'->'fields'->>'gameAccount', '') || ' ' ||
+    COALESCE(${alias}.material_json->'collect'->'fields'->>'roleName', '') || ' ' ||
+    COALESCE(${alias}.material_json->'fields'->>'gameId', '') || ' ' ||
+    COALESCE(${alias}.material_json->'fields'->>'gameNickname', '') || ' ' ||
+    COALESCE(${alias}.material_json->>'gameId', '') || ' ' ||
+    COALESCE(${alias}.material_json->>'gameNickname', '')
+  )`
+}
+
 export async function listWorkOrderShares(
   workOrderId: number | string,
 ): Promise<WorkOrderShareRow[]> {
@@ -2821,9 +2838,7 @@ function buildWorkOrderWhere({
   }
   if (keyword) {
     params.push(`%${keyword}%`)
-    filters.push(
-      `(wo.work_order_no ILIKE $${params.length} OR wo.platform_order_id ILIKE $${params.length} OR wo.product_name ILIKE $${params.length})`,
-    )
+    filters.push(`${workOrderSearchExpression()} LIKE LOWER($${params.length})`)
   }
   if (workerId) {
     params.push(workerId)
diff --git a/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx b/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
index 3945d294..d2f5c1c5 100644
--- a/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
+++ b/apps/frontend/src/pages/admin/panels/WorkOrdersPanel.tsx
@@ -912,7 +912,7 @@ export default function WorkOrdersPanel() {
             <Input
               allowClear
               value={keywordInput}
-              placeholder="订单号或商品名"
+              placeholder="订单号 / 商品名 / 游戏ID / 游戏昵称"
               style={{ width: 280 }}
               onChange={(event) => setKeywordInput(event.target.value)}
               onPressEnter={searchOrders}
diff --git a/apps/frontend/src/pages/worker/WorkerHallPage.tsx b/apps/frontend/src/pages/worker/WorkerHallPage.tsx
index 308741ea..55fb8f46 100644
--- a/apps/frontend/src/pages/worker/WorkerHallPage.tsx
+++ b/apps/frontend/src/pages/worker/WorkerHallPage.tsx
@@ -327,7 +327,7 @@ export default function WorkerHallPage() {
             <Input
               allowClear
               value={keywordInput}
-              placeholder="搜索商品 / 订单号"
+              placeholder="搜索商品 / 订单号 / 游戏ID / 游戏昵称"
               prefix={<SearchOutlined />}
               className="worker-hall-mobile-search-input"
               onChange={(event) => {
@@ -524,7 +524,7 @@ export default function WorkerHallPage() {
                 <Input
                   allowClear
                   value={keywordInput}
-                  placeholder="搜索商品名称 / 订单号"
+                  placeholder="搜索商品名称 / 订单号 / 游戏ID / 游戏昵称"
                   prefix={<SearchOutlined />}
                   onChange={(event) => {
                     const nextKeyword = event.target.value
diff --git a/apps/frontend/src/pages/worker/WorkerOrdersPage.tsx b/apps/frontend/src/pages/worker/WorkerOrdersPage.tsx
index c9586904..594708ae 100644
--- a/apps/frontend/src/pages/worker/WorkerOrdersPage.tsx
+++ b/apps/frontend/src/pages/worker/WorkerOrdersPage.tsx
@@ -659,7 +659,7 @@ export default function WorkerOrdersPage() {
             <Input
               allowClear
               value={keywordInput}
-              placeholder="搜索订单号 / 商品名"
+              placeholder="搜索订单号 / 商品名 / 游戏ID / 游戏昵称"
               prefix={<SearchOutlined />}
               className="worker-orders-mobile-search-input"
               onChange={(event) => {
@@ -986,7 +986,7 @@ export default function WorkerOrdersPage() {
                 <Input
                   allowClear
                   value={keywordInput}
-                  placeholder="搜索订单号 / 商品名"
+                  placeholder="搜索订单号 / 商品名 / 游戏ID / 游戏昵称"
                   prefix={<SearchOutlined />}
                   onChange={(event) => {
                     const nextValue = event.target.value