diff --git a/config/src/main/java/com/alibaba/nacos/config/server/auth/ConfigResourceParser.java b/config/src/main/java/com/alibaba/nacos/config/server/auth/ConfigResourceParser.java
index d60d5bb0f..6aa8ffa8e 100644
--- a/config/src/main/java/com/alibaba/nacos/config/server/auth/ConfigResourceParser.java
+++ b/config/src/main/java/com/alibaba/nacos/config/server/auth/ConfigResourceParser.java
@@ -15,7 +15,6 @@
  */
 package com.alibaba.nacos.config.server.auth;
 
-import com.alibaba.nacos.api.common.Constants;
 import com.alibaba.nacos.core.auth.Resource;
 import com.alibaba.nacos.core.auth.ResourceParser;
 import org.apache.commons.lang3.StringUtils;
@@ -39,13 +38,13 @@ public class ConfigResourceParser implements ResourceParser {
         String groupName = req.getParameter("group");
         String dataId = req.getParameter("dataId");
 
-        if (StringUtils.isBlank(namespaceId)) {
-            namespaceId = Constants.DEFAULT_NAMESPACE_ID;
-        }
-
         StringBuilder sb = new StringBuilder();
 
-        sb.append(namespaceId).append(Resource.SPLITTER);
+        if (StringUtils.isNotBlank(namespaceId)) {
+            sb.append(namespaceId);
+        }
+
+        sb.append(Resource.SPLITTER);
 
         if (StringUtils.isBlank(dataId)) {
             sb.append("*")
diff --git a/console/src/main/java/com/alibaba/nacos/console/controller/UserController.java b/console/src/main/java/com/alibaba/nacos/console/controller/UserController.java
index 523bb0f43..46c771064 100644
--- a/console/src/main/java/com/alibaba/nacos/console/controller/UserController.java
+++ b/console/src/main/java/com/alibaba/nacos/console/controller/UserController.java
@@ -17,10 +17,12 @@ package com.alibaba.nacos.console.controller;
 
 import com.alibaba.fastjson.JSONObject;
 import com.alibaba.nacos.api.common.Constants;
+import com.alibaba.nacos.config.server.auth.RoleInfo;
 import com.alibaba.nacos.config.server.model.RestResult;
 import com.alibaba.nacos.config.server.model.User;
 import com.alibaba.nacos.console.security.nacos.NacosAuthConfig;
 import com.alibaba.nacos.console.security.nacos.NacosAuthManager;
+import com.alibaba.nacos.console.security.nacos.roles.NacosRoleServiceImpl;
 import com.alibaba.nacos.console.security.nacos.users.NacosUser;
 import com.alibaba.nacos.console.security.nacos.users.NacosUserDetailsServiceImpl;
 import com.alibaba.nacos.console.utils.JwtTokenUtils;
@@ -37,6 +39,7 @@ import org.springframework.web.bind.annotation.*;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import java.util.List;
 
 /**
  * User related methods entry
@@ -57,6 +60,9 @@ public class UserController {
     @Autowired
     private NacosUserDetailsServiceImpl userDetailsService;
 
+    @Autowired
+    private NacosRoleServiceImpl roleService;
+
     @Autowired
     private AuthConfigs authConfigs;
 
@@ -94,7 +100,12 @@ public class UserController {
     @DeleteMapping
     @Secured(resource = NacosAuthConfig.CONSOLE_RESOURCE_NAME_PREFIX + "users", action = ActionTypes.WRITE)
     public Object deleteUser(@RequestParam String username) {
-
+        List<RoleInfo> roleInfoList = roleService.getRoles(username);
+        for (RoleInfo roleInfo : roleInfoList) {
+            if (roleInfo.getRole().equals(NacosRoleServiceImpl.GLOBAL_ADMIN_ROLE)) {
+                throw new IllegalArgumentException("cannot delete admin: " + username);
+            }
+        }
         userDetailsService.deleteUser(username);
         return new RestResult<>(200, "delete user ok!");
     }
diff --git a/core/src/main/java/com/alibaba/nacos/core/auth/AuthFilter.java b/core/src/main/java/com/alibaba/nacos/core/auth/AuthFilter.java
index 77bf8c8af..da7d457b3 100644
--- a/core/src/main/java/com/alibaba/nacos/core/auth/AuthFilter.java
+++ b/core/src/main/java/com/alibaba/nacos/core/auth/AuthFilter.java
@@ -66,10 +66,6 @@ public class AuthFilter implements Filter {
             return;
         }
 
-        if (Loggers.AUTH.isDebugEnabled()) {
-            Loggers.AUTH.debug("auth filter start, request: {} {}", req.getMethod(), req.getRequestURI());
-        }
-
         try {
 
             String path = new URI(req.getRequestURI()).getPath();
@@ -82,6 +78,10 @@ public class AuthFilter implements Filter {
 
             if (method.isAnnotationPresent(Secured.class) && authConfigs.isAuthEnabled()) {
 
+                if (Loggers.AUTH.isDebugEnabled()) {
+                    Loggers.AUTH.debug("auth start, request: {} {}", req.getMethod(), req.getRequestURI());
+                }
+
                 Secured secured = method.getAnnotation(Secured.class);
                 String action = secured.action().toString();
                 String resource = secured.resource();
diff --git a/naming/src/main/java/com/alibaba/nacos/naming/web/NamingResourceParser.java b/naming/src/main/java/com/alibaba/nacos/naming/web/NamingResourceParser.java
index 0632b9104..29c7e4c31 100644
--- a/naming/src/main/java/com/alibaba/nacos/naming/web/NamingResourceParser.java
+++ b/naming/src/main/java/com/alibaba/nacos/naming/web/NamingResourceParser.java
@@ -47,13 +47,13 @@ public class NamingResourceParser implements ResourceParser {
         }
         serviceName = NamingUtils.getServiceName(serviceName);
 
-        if (StringUtils.isBlank(namespaceId)) {
-            namespaceId = Constants.DEFAULT_NAMESPACE_ID;
-        }
-
         StringBuilder sb = new StringBuilder();
 
-        sb.append(namespaceId).append(Resource.SPLITTER);
+        if (StringUtils.isNotBlank(namespaceId)) {
+            sb.append(namespaceId);
+        }
+
+        sb.append(Resource.SPLITTER);
 
         if (StringUtils.isBlank(serviceName)) {
             sb.append("*")