diff --git a/src/main/java/com/gxwebsoft/common/system/service/impl/UserServiceImpl.java b/src/main/java/com/gxwebsoft/common/system/service/impl/UserServiceImpl.java
index 3057326..82cd3df 100644
--- a/src/main/java/com/gxwebsoft/common/system/service/impl/UserServiceImpl.java
+++ b/src/main/java/com/gxwebsoft/common/system/service/impl/UserServiceImpl.java
@@ -13,6 +13,7 @@ import com.gxwebsoft.common.core.web.PageResult;
 import com.gxwebsoft.common.system.entity.*;
 import com.gxwebsoft.common.system.mapper.UserMapper;
 import com.gxwebsoft.common.system.param.LoginParam;
+import com.gxwebsoft.common.system.param.RoleParam;
 import com.gxwebsoft.common.system.param.UserParam;
 import com.gxwebsoft.common.mq.producer.SyncMessageProducer;
 import com.gxwebsoft.common.system.service.*;
@@ -26,6 +27,7 @@ import org.springframework.transaction.annotation.Isolation;
 import org.springframework.transaction.annotation.Transactional;
 
 import javax.annotation.Resource;
+import java.util.Collections;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -223,12 +225,34 @@ public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements Us
         user.setUserId(userId);
         user.setIsDeveloper(true);
         boolean result = updateById(user);
-        // 标记开发者后，通过MQ异步同步用户数据到 websopy
-        if (result && syncMessageProducer != null) {
-            User updatedUser = getAllByUserId(String.valueOf(userId));
-            if (updatedUser != null) {
-                syncMessageProducer.sendUserSyncMessage("websopy", "UPDATE", updatedUser);
-                log.info("用户设为开发者后同步到websopy: userId={}", userId);
+        if (result) {
+            // 替换用户角色为 developer：先按用户所在租户找到 developer 角色，删除该用户现有角色后
+            // 只绑定 developer，保证用户最终只有「开发者」单一角色（不与原角色并存）
+            try {
+                User dbUser = getById(userId);
+                Integer tenantId = dbUser != null ? dbUser.getTenantId() : null;
+                RoleParam roleParam = new RoleParam();
+                roleParam.setRoleCode("developer");
+                if (tenantId != null) {
+                    roleParam.setTenantId(tenantId);
+                }
+                Role developerRole = roleService.getByRoleCode(roleParam);
+                if (developerRole != null && developerRole.getRoleId() != null) {
+                    userRoleService.remove(new LambdaUpdateWrapper<UserRole>().eq(UserRole::getUserId, userId));
+                    userRoleService.saveBatch(userId, Collections.singletonList(developerRole.getRoleId()));
+                    log.info("用户设为开发者并替换角色为 developer: userId={}, roleId={}", userId, developerRole.getRoleId());
+                }
+            } catch (Exception e) {
+                // 角色替换失败不影响 is_developer 标记位落库
+                log.warn("替换用户角色为 developer 失败（不影响 is_developer 标记）: userId={}", userId, e);
+            }
+            // 标记开发者后，通过MQ异步同步用户数据到 websopy
+            if (syncMessageProducer != null) {
+                User updatedUser = getAllByUserId(String.valueOf(userId));
+                if (updatedUser != null) {
+                    syncMessageProducer.sendUserSyncMessage("websopy", "UPDATE", updatedUser);
+                    log.info("用户设为开发者后同步到websopy: userId={}", userId);
+                }
             }
         }
         return result;