diff --git a/frontend/admin-web/src/components/features/system-account-report/SystemAccountsTab.tsx b/frontend/admin-web/src/components/features/system-account-report/SystemAccountsTab.tsx
index 43e9b4eb..980491f3 100644
--- a/frontend/admin-web/src/components/features/system-account-report/SystemAccountsTab.tsx
+++ b/frontend/admin-web/src/components/features/system-account-report/SystemAccountsTab.tsx
@@ -299,14 +299,18 @@ export default function SystemAccountsTab() {
  * [2026-01-07] 更新：添加查看分类账明细按钮，在卡片下方公共区域显示明细
  */
 function FixedAccountsSection({ data }: { data: SystemAccountReportResponse['fixedAccounts'] }) {
-  // [2026-01-07] 更新：使用 SYSTEM_ACCOUNT_NAMES 映射获取正式名称
+  // [2026-01-07] 修复：从后端返回数据中读取真实的 accountSequence，而不是硬编码
+  // 后端映射：S0000000001=HQ_COMMUNITY, S0000000002=COST_ACCOUNT, S0000000003=OPERATION_ACCOUNT
   const accounts = [
-    { key: 'costAccount', sequence: 'S0000000001', data: data.costAccount },
-    { key: 'operationAccount', sequence: 'S0000000002', data: data.operationAccount },
-    { key: 'hqCommunity', sequence: 'S0000000003', data: data.hqCommunity },
-    { key: 'rwadPoolPending', sequence: 'S0000000004', data: data.rwadPoolPending },
-    { key: 'platformFee', sequence: 'S0000000005', data: data.platformFee },
-  ];
+    { key: 'costAccount', data: data.costAccount },
+    { key: 'operationAccount', data: data.operationAccount },
+    { key: 'hqCommunity', data: data.hqCommunity },
+    { key: 'rwadPoolPending', data: data.rwadPoolPending },
+    { key: 'platformFee', data: data.platformFee },
+  ].map(item => ({
+    ...item,
+    sequence: item.data?.accountSequence || '',
+  }));
 
   // [2026-01-07] 新增：选中账户和分类账数据
   const [selectedAccount, setSelectedAccount] = useState<string | null>(null);
diff --git a/frontend/admin-web/src/types/system-account.types.ts b/frontend/admin-web/src/types/system-account.types.ts
index 5c30ee68..56fb90a6 100644
--- a/frontend/admin-web/src/types/system-account.types.ts
+++ b/frontend/admin-web/src/types/system-account.types.ts
@@ -127,11 +127,13 @@ export interface ExpiredRewardsEntriesResponse {
 
 /**
  * 固定系统账户
+ * 注意：账户序列号由后端 wallet-service 的 fixedAccountTypes 映射决定
+ * 当前后端映射：S0000000001=HQ_COMMUNITY, S0000000002=COST_ACCOUNT, S0000000003=OPERATION_ACCOUNT
  */
 export interface FixedAccounts {
-  costAccount: SystemAccountWithBalance | null;       // 成本账户 S0000000001
-  operationAccount: SystemAccountWithBalance | null;  // 运营账户 S0000000002
-  hqCommunity: SystemAccountWithBalance | null;       // 总部社区 S0000000003
+  costAccount: SystemAccountWithBalance | null;       // 成本账户 (由后端分配序列号)
+  operationAccount: SystemAccountWithBalance | null;  // 运营账户 (由后端分配序列号)
+  hqCommunity: SystemAccountWithBalance | null;       // 总部社区 (由后端分配序列号)
   rwadPoolPending: SystemAccountWithBalance | null;   // RWAD待发放池 S0000000004
   platformFee: SystemAccountWithBalance | null;       // 平台手续费 S0000000005
 }