diff --git a/tyr-api/src/main/java/cn/axzo/tyr/client/model/roleuser/req/RoleUserReq.java b/tyr-api/src/main/java/cn/axzo/tyr/client/model/roleuser/req/RoleUserReq.java
index 9ad359d8..7357a877 100644
--- a/tyr-api/src/main/java/cn/axzo/tyr/client/model/roleuser/req/RoleUserReq.java
+++ b/tyr-api/src/main/java/cn/axzo/tyr/client/model/roleuser/req/RoleUserReq.java
@@ -57,6 +57,13 @@ public class RoleUserReq {
      */
     private Set<Long> updateRoleIds;
 
+    /**
+     * 是否合并当前已存在的角色
+     * 适用于角色更新或者角色新增
+     * 默认true
+     */
+    private boolean mergeExistsRoles = true;
+
 
     /**
      * 该请求是否是权限回收
diff --git a/tyr-server/src/main/java/cn/axzo/tyr/server/service/impl/RoleUserService.java b/tyr-server/src/main/java/cn/axzo/tyr/server/service/impl/RoleUserService.java
index b288e2f3..ecfe7f97 100644
--- a/tyr-server/src/main/java/cn/axzo/tyr/server/service/impl/RoleUserService.java
+++ b/tyr-server/src/main/java/cn/axzo/tyr/server/service/impl/RoleUserService.java
@@ -88,8 +88,10 @@ public class RoleUserService implements SaasRoleUserService {
             }
             roleUserRelationDao.deleteByUser(workspaceModel, notAdminRole);
         }
-        //合并 新的角色和老的角色
-        updateRoleIds.addAll(notAdminRole);
+        if(req.isMergeExistsRoles()){
+            //合并新的角色和老的角色
+            updateRoleIds.addAll(notAdminRole);
+        }
         // 清空所有角色
         if (CollectionUtil.isEmpty(updateRoleIds)) {
             return;