diff --git a/im-center-api/src/main/java/cn/axzo/im/center/api/vo/req/GroupAddMembersRequest.java b/im-center-api/src/main/java/cn/axzo/im/center/api/vo/req/GroupAddMembersRequest.java
index 7eb6fbc..bdf5408 100644
--- a/im-center-api/src/main/java/cn/axzo/im/center/api/vo/req/GroupAddMembersRequest.java
+++ b/im-center-api/src/main/java/cn/axzo/im/center/api/vo/req/GroupAddMembersRequest.java
@@ -24,7 +24,7 @@ public class GroupAddMembersRequest {
      * 邀请者
      */
     @NotNull(message = "inviter不能为空")
-    private PersonAccountAttribute inviter;
+    private String inviter;
 
     /**
      * 群成员, 不包含群主. members数量不能超过199
diff --git a/im-center-server/src/main/java/cn/axzo/im/dao/repository/GroupMemberDao.java b/im-center-server/src/main/java/cn/axzo/im/dao/repository/GroupMemberDao.java
index 704cf32..e44928d 100644
--- a/im-center-server/src/main/java/cn/axzo/im/dao/repository/GroupMemberDao.java
+++ b/im-center-server/src/main/java/cn/axzo/im/dao/repository/GroupMemberDao.java
@@ -22,6 +22,13 @@ import static java.util.stream.Collectors.toSet;
 @Repository("groupMemberDao")
 public class GroupMemberDao extends ServiceImpl<GroupMapperMapper, GroupMember> {
 
+    public Optional<GroupMember> findByAccount(Long tid, String imAccount) {
+        return lambdaQuery()
+                .eq(GroupMember::getTid, tid)
+                .eq(GroupMember::getImAccount, imAccount)
+                .oneOpt();
+    }
+
     public void deleteAccounts(Long tid) {
         lambdaUpdate()
                 .eq(GroupMember::getTid, tid)
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 6ecae5a..89f8167 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
@@ -142,7 +142,7 @@ public class GroupManager {
                 return new GroupAddMembersResponse();
             }
             GroupMember inviter = groupMemberDao
-                    .findByPerson(group.getTid(), request.getInviter())
+                    .findByAccount(group.getTid(), request.getInviter())
                     .orElse(null);
             BizAssertions.assertNotNull(inviter, "邀请者不在群中");
             //noinspection DataFlowIssue