diff --git a/core/src/main/java/com/yizhuan/xchat_android_core/auth/AuthModel.java b/core/src/main/java/com/yizhuan/xchat_android_core/auth/AuthModel.java
index 9fe6482da..d685cf249 100644
--- a/core/src/main/java/com/yizhuan/xchat_android_core/auth/AuthModel.java
+++ b/core/src/main/java/com/yizhuan/xchat_android_core/auth/AuthModel.java
@@ -194,7 +194,10 @@ public class AuthModel extends BaseModel implements IAuthModel {
     @Override
     public String getTicket() {
         if (ticketInfo != null && ticketInfo.getTickets() != null && ticketInfo.getTickets().size() > 0) {
-            return ticketInfo.getTickets().get(0).getTicket();
+            String value = ticketInfo.getTickets().get(0).getTicket();
+            if (value != null) {
+                return value;
+            }
         }
         return "";
     }