diff --git a/src/services/creditsService.ts b/src/services/creditsService.ts
index 5b55a61..09a3a9f 100644
--- a/src/services/creditsService.ts
+++ b/src/services/creditsService.ts
@@ -94,7 +94,7 @@ export async function fetchBalance(): Promise<number | null> {
  * 调用 StrangeLoop 余额接口
  */
 async function callStrangeLoopBalance(token: string): Promise<StrangeLoopBalanceResponse> {
-  const urlStr = getStrangeLoopApiUrl('/api/credit/balance');
+  const urlStr = getStrangeLoopApiUrl('/strangeloop/api/credit/balance');
   const url = new URL(urlStr);
 
   const isHttps = url.protocol === 'https:';