diff --git a/frontend/admin-web/src/types/system-account.types.ts b/frontend/admin-web/src/types/system-account.types.ts
index 56fb90a6..2c6aeeb4 100644
--- a/frontend/admin-web/src/types/system-account.types.ts
+++ b/frontend/admin-web/src/types/system-account.types.ts
@@ -6,9 +6,11 @@
 
 /**
  * 系统账户 DTO
+ * [2026-01-07] 更新：添加 accountSequence 字段（后端 wallet-service 返回）
  */
 export interface SystemAccountDTO {
   id: string;
+  accountSequence: string;  // 账户序列号，如 S0000000001
   accountType: string;
   regionCode: string | null;
   regionName: string | null;