diff --git a/im-center-server/src/main/java/cn/axzo/im/group/GroupManager.java b/im-center-server/src/main/java/cn/axzo/im/group/GroupManager.java
index ff0ef04..c39226b 100644
--- a/im-center-server/src/main/java/cn/axzo/im/group/GroupManager.java
+++ b/im-center-server/src/main/java/cn/axzo/im/group/GroupManager.java
@@ -60,8 +60,8 @@ public class GroupManager {
         BizAssertions.assertTrue(request.getOwnerAndMembers().size() > 1, "群成员数量(含群主)不能少于2");
         ImAccounts imAccounts = getImAccounts(request.getOwnerAndMembers());
         String owner = imAccounts.findAccount(request.getOwner()).orElse(null);
-        Group group = groupSupport.buildNewGroup(request, imAccounts);
         BizAssertions.assertNotNull(owner, "群主没有IM账号, 无法创建群. {}", request.getOwner());
+        Group group = groupSupport.buildNewGroup(request, imAccounts);
         BizAssertions.assertFalse(group.isMemberLimitReached(
                 request.getOwnerAndMembers().size()), "无法创建群, 群成员数量超过上限" + group.getMemberLimit());
         try {