diff --git a/namesrv/src/main/java/org/apache/rocketmq/namesrv/processor/DefaultRequestProcessor.java b/namesrv/src/main/java/org/apache/rocketmq/namesrv/processor/DefaultRequestProcessor.java
index 1883574241b..2daa95b9bc0 100644
--- a/namesrv/src/main/java/org/apache/rocketmq/namesrv/processor/DefaultRequestProcessor.java
+++ b/namesrv/src/main/java/org/apache/rocketmq/namesrv/processor/DefaultRequestProcessor.java
@@ -168,11 +168,7 @@ public RemotingCommand putKVConfig(ChannelHandlerContext ctx,
             response.setRemark("namespace or key is null");
             return response;
         }
-        if (validateBlackListConfigExist(requestHeader.getKey())) {
-            response.setCode(ResponseCode.NO_PERMISSION);
-            response.setRemark("Can not update config in black list.");
-            return response;
-        }
+
         this.namesrvController.getKvConfigManager().putKVConfig(
             requestHeader.getNamespace(),
             requestHeader.getKey(),
@@ -686,7 +682,4 @@ private boolean validateBlackListConfigExist(Properties properties) {
         return false;
     }
 
-    private boolean validateBlackListConfigExist(String key) {
-        return configBlackList.contains(key);
-    }
 }
diff --git a/namesrv/src/test/java/org/apache/rocketmq/namesrv/processor/RequestProcessorTest.java b/namesrv/src/test/java/org/apache/rocketmq/namesrv/processor/RequestProcessorTest.java
index eddc5e11de1..2b2cf629494 100644
--- a/namesrv/src/test/java/org/apache/rocketmq/namesrv/processor/RequestProcessorTest.java
+++ b/namesrv/src/test/java/org/apache/rocketmq/namesrv/processor/RequestProcessorTest.java
@@ -110,19 +110,6 @@ public void testProcessRequest_PutKVConfig() throws RemotingCommandException {
 
         assertThat(namesrvController.getKvConfigManager().getKVConfig("namespace", "key"))
             .isEqualTo("value");
-
-        // use key in black list
-        RemotingCommand requestFailed = RemotingCommand.createRequestCommand(RequestCode.PUT_KV_CONFIG,
-                header);
-        requestFailed.addExtField("namespace", "namespace");
-        requestFailed.addExtField("key", "configBlackList");
-        requestFailed.addExtField("value", "value");
-
-        RemotingCommand responseFailed = defaultRequestProcessor.processRequest(null, requestFailed);
-
-        assertThat(responseFailed).isNotNull();
-        assertThat(responseFailed.getCode()).isEqualTo(ResponseCode.NO_PERMISSION);
-        assertThat(responseFailed.getRemark()).contains("Can not update config in black list.");
     }
 
     @Test