diff --git a/game-service/src/main/java/awesome/group/game/service/citrus/UserService.java b/game-service/src/main/java/awesome/group/game/service/citrus/UserService.java
index 9123936..b3f8abf 100644
--- a/game-service/src/main/java/awesome/group/game/service/citrus/UserService.java
+++ b/game-service/src/main/java/awesome/group/game/service/citrus/UserService.java
@@ -18,6 +18,7 @@ import awesome.group.game.service.common.exception.PaganiExceptionCode;
 import awesome.group.game.service.util.DateUtil;
 import awesome.group.game.service.util.EncryptUtil;
 import com.google.gson.Gson;
+import org.apache.commons.lang.RandomStringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
@@ -103,6 +104,7 @@ public class UserService {
             user = new MatrixUser();
             user.setAppId(app.getId());
             user.setMobile(mobile);
+            user.setInviteCode(RandomStringUtils.randomAlphabetic(12));
             userMapper.insert(user);
         }
         return user;