diff --git a/src/main/java/com/actiontech/dble/config/ServerPrivileges.java b/src/main/java/com/actiontech/dble/config/ServerPrivileges.java
index b67e63fb2a..349834807a 100644
--- a/src/main/java/com/actiontech/dble/config/ServerPrivileges.java
+++ b/src/main/java/com/actiontech/dble/config/ServerPrivileges.java
@@ -99,23 +99,19 @@ public int getBenchmark(String user) {
     }
 
     protected boolean checkManagerPrivilege(String user) {
-        //  normal user don't neet manager privilege
+        //  normal user don't need manager privilege
         return true;
     }
 
     @Override
     public boolean checkFirewallWhiteHostPolicy(String user, String host) {
-
-        ServerConfig config = DbleServer.getInstance().getConfig();
-        FirewallConfig firewallConfig = config.getFirewall();
-
         if (!checkManagerPrivilege(user)) {
-            // return and don't trigger firewall alarm
+            // normal user try to login by manager port
             return false;
         }
-
         boolean isPassed = false;
-
+        ServerConfig config = DbleServer.getInstance().getConfig();
+        FirewallConfig firewallConfig = config.getFirewall();
         Map<String, List<UserConfig>> whitehost = firewallConfig.getWhitehost();
         if (whitehost == null || whitehost.size() == 0) {
             Map<String, UserConfig> users = config.getUsers();
@@ -143,17 +139,21 @@ public boolean checkFirewallWhiteHostPolicy(String user, String host) {
 
 
     /**
-     * @see https://github.com/alibaba/druid/wiki/%E9%85%8D%E7%BD%AE-wallfilter
+     *
+     * @see <a href="https://github.com/alibaba/druid/wiki/%E9%85%8D%E7%BD%AE-wallfilter">wallfilter config guide</a>
      */
     @Override
     public boolean checkFirewallSQLPolicy(String user, String sql) {
-
+        if (isManagerUser(user)) {
+            // manager User will ignore firewall blacklist
+            return true;
+        }
         boolean isPassed = true;
 
         if (CONTEXT_LOCAL.get() == null) {
             FirewallConfig firewallConfig = DbleServer.getInstance().getConfig().getFirewall();
             if (firewallConfig != null) {
-                if (firewallConfig.isCheck()) {
+                if (firewallConfig.isBlackListCheck()) {
                     CONTEXT_LOCAL.set(firewallConfig.getProvider());
                     check = true;
                 }
@@ -171,6 +171,12 @@ public boolean checkFirewallSQLPolicy(String user, String sql) {
         return isPassed;
     }
 
+    protected boolean isManagerUser(String user) {
+        ServerConfig conf = DbleServer.getInstance().getConfig();
+        UserConfig uc = conf.getUsers().get(user);
+        return uc != null && uc.isManager();
+    }
+
     public enum Checktype {
         INSERT, UPDATE, SELECT, DELETE
     }
diff --git a/src/main/java/com/actiontech/dble/config/loader/xml/XMLServerLoader.java b/src/main/java/com/actiontech/dble/config/loader/xml/XMLServerLoader.java
index 9f9f61127c..90f5f81651 100644
--- a/src/main/java/com/actiontech/dble/config/loader/xml/XMLServerLoader.java
+++ b/src/main/java/com/actiontech/dble/config/loader/xml/XMLServerLoader.java
@@ -129,7 +129,7 @@ private void loadFirewall(Element root) throws IllegalAccessException, Invocatio
                 Element e = (Element) node;
                 String check = e.getAttribute("check");
                 if (null != check) {
-                    firewall.setCheck(Boolean.parseBoolean(check));
+                    firewall.setBlackListCheck(Boolean.parseBoolean(check));
                 }
 
                 Map<String, Object> props = ConfigUtil.loadElements((Element) node);
diff --git a/src/main/java/com/actiontech/dble/config/model/FirewallConfig.java b/src/main/java/com/actiontech/dble/config/model/FirewallConfig.java
index c860a1f4c8..5936217565 100644
--- a/src/main/java/com/actiontech/dble/config/model/FirewallConfig.java
+++ b/src/main/java/com/actiontech/dble/config/model/FirewallConfig.java
@@ -25,7 +25,7 @@ public final class FirewallConfig {
     private static final Logger LOGGER = LoggerFactory.getLogger(FirewallConfig.class);
 
     private Map<String, List<UserConfig>> whitehost;
-    private boolean check = false;
+    private boolean blackListCheck = false;
 
     private WallConfig wallConfig = new WallConfig();
 
@@ -35,7 +35,7 @@ public FirewallConfig() {
     }
 
     public void init() {
-        if (check) {
+        if (blackListCheck) {
             provider = new MySqlWallProvider(wallConfig);
             provider.setBlackListEnable(true);
         }
@@ -71,12 +71,12 @@ public void setWallConfig(WallConfig wallConfig) {
 
     }
 
-    public boolean isCheck() {
-        return this.check;
+    public boolean isBlackListCheck() {
+        return this.blackListCheck;
     }
 
-    public void setCheck(boolean check) {
-        this.check = check;
+    public void setBlackListCheck(boolean blackListCheck) {
+        this.blackListCheck = blackListCheck;
     }
 
 }
diff --git a/src/main/java/com/actiontech/dble/manager/ManagerPrivileges.java b/src/main/java/com/actiontech/dble/manager/ManagerPrivileges.java
index ba1ca63eb4..d4d2ae766a 100644
--- a/src/main/java/com/actiontech/dble/manager/ManagerPrivileges.java
+++ b/src/main/java/com/actiontech/dble/manager/ManagerPrivileges.java
@@ -5,10 +5,7 @@
 */
 package com.actiontech.dble.manager;
 
-import com.actiontech.dble.DbleServer;
-import com.actiontech.dble.config.ServerConfig;
 import com.actiontech.dble.config.ServerPrivileges;
-import com.actiontech.dble.config.model.UserConfig;
 
 /**
  * @author mycat
@@ -25,9 +22,7 @@ private ManagerPrivileges() {
     }
 
     protected boolean checkManagerPrivilege(String user) {
-        ServerConfig config = DbleServer.getInstance().getConfig();
-        UserConfig rUser = config.getUsers().get(user);
         // Manager privilege must be assign explicitly
-        return rUser != null && rUser.isManager();
+        return isManagerUser(user);
     }
 }
diff --git a/src/main/java/com/actiontech/dble/net/handler/FrontendPrivileges.java b/src/main/java/com/actiontech/dble/net/handler/FrontendPrivileges.java
index 8fd6186b2d..45177bf03f 100644
--- a/src/main/java/com/actiontech/dble/net/handler/FrontendPrivileges.java
+++ b/src/main/java/com/actiontech/dble/net/handler/FrontendPrivileges.java
@@ -62,5 +62,4 @@ public interface FrontendPrivileges {
      * @return
      */
     boolean checkFirewallSQLPolicy(String user, String sql);
-
 }