diff --git a/Runtime/GuruCore/Runtime/Firebase/FirebaseUtil.Auth.cs b/Runtime/GuruCore/Runtime/Firebase/FirebaseUtil.Auth.cs
index 1700194..ef2b31c 100644
--- a/Runtime/GuruCore/Runtime/Firebase/FirebaseUtil.Auth.cs
+++ b/Runtime/GuruCore/Runtime/Firebase/FirebaseUtil.Auth.cs
@@ -32,17 +32,23 @@ namespace Guru
 			FirebaseAuth.DefaultInstance.SignInWithCustomTokenAsync(authToken)
 				.ContinueWithOnMainThread(task =>
 				{
+					// ----- Task failed ----- 
 					if (task.IsCanceled || task.IsFaulted)
 					{
 						Log.E(LOG_TAG,"[Auth] SignInWithCustomTokenAsync encountered an error: " + task.Exception);
-						CoroutineHelper.Instance.StartDelayed(_wait, AuthUser);
 						OnFirebaseAuthResult?.Invoke(false);
+						CoroutineHelper.Instance.StartDelayed(_wait, AuthUser);
+						return;
 					}
-					else if (CurrentUser == null)
+					// ----- User is NULL ----- 
+					if (CurrentUser == null)
 					{
-						CoroutineHelper.Instance.StartDelayed(_wait, AuthUser);
 						OnFirebaseAuthResult?.Invoke(false);
+						CoroutineHelper.Instance.StartDelayed(_wait, AuthUser);
+						return;
 					}
+					// ----- Success ----- 
+					OnFirebaseAuthResult?.Invoke(true); // 最后判定是成功的
 				});
 		}
 	}