diff --git a/eventmesh-webhook/eventmesh-webhook-receive/src/main/java/org/apache/eventmesh/webhook/receive/WebHookController.java b/eventmesh-webhook/eventmesh-webhook-receive/src/main/java/org/apache/eventmesh/webhook/receive/WebHookController.java
index 52df13c248..cdba71a1c6 100644
--- a/eventmesh-webhook/eventmesh-webhook-receive/src/main/java/org/apache/eventmesh/webhook/receive/WebHookController.java
+++ b/eventmesh-webhook/eventmesh-webhook-receive/src/main/java/org/apache/eventmesh/webhook/receive/WebHookController.java
@@ -47,6 +47,14 @@ public class WebHookController {
 
     private static final String CONTENT_TYPE = "content-type";
 
+    private static final String UUID_GENERATE_MODE = "uuid";
+
+    private static final String WEBSITE_PREFIX = "www.";
+
+    private static final String WEBSITE_SUFFIX = ".com";
+
+    private static final String DOT = ".";
+
     /**
      * protocol pool
      */
@@ -106,13 +114,13 @@ public void execute(String path, Map<String, String> header, byte[] body) throws
         }
 
         // 3. convert to cloudEvent obj
-        String cloudEventId = "uuid".equals(webHookConfig.getCloudEventIdGenerateMode()) ? UUID.randomUUID().toString()
+        String cloudEventId = UUID_GENERATE_MODE.equals(webHookConfig.getCloudEventIdGenerateMode()) ? UUID.randomUUID().toString()
             : webHookRequest.getManufacturerEventId();
-        String eventType = manufacturerName + "." + webHookConfig.getManufacturerEventName();
+        String eventType = manufacturerName + DOT + webHookConfig.getManufacturerEventName();
 
         WebhookProtocolTransportObject webhookProtocolTransportObject = WebhookProtocolTransportObject.builder()
             .cloudEventId(cloudEventId).eventType(eventType).cloudEventName(webHookConfig.getCloudEventName())
-            .cloudEventSource("www." + webHookConfig.getManufacturerName() + ".com")
+            .cloudEventSource(WEBSITE_PREFIX + webHookConfig.getManufacturerName() + WEBSITE_SUFFIX)
             .dataContentType(webHookConfig.getDataContentType()).body(body).build();
 
         // 4. send cloudEvent