diff --git a/src/main/java/com/example/caseData/service/UserService.java b/src/main/java/com/example/caseData/service/UserService.java
index cb8d33e..4244470 100644
--- a/src/main/java/com/example/caseData/service/UserService.java
+++ b/src/main/java/com/example/caseData/service/UserService.java
@@ -379,7 +379,7 @@ public class UserService {
         try {
             HashMap<String, Object> params = new HashMap<>();
             params.put("mobile", mobile);
-            params.put("platform", "case");
+            params.put("platform", appConfig.getPlatform());
             params.put("timestamp", System.currentTimeMillis() / 1000);
             String signature = Sha256Util.getSign(params, appConfig.getAccessToken());
             params.put("signature", signature);