diff --git a/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v2/MongoDBCollectionMethodInterceptor.java b/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v2/MongoDBCollectionMethodInterceptor.java
index dbdcaa6a5..84013cb6c 100644
--- a/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v2/MongoDBCollectionMethodInterceptor.java
+++ b/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v2/MongoDBCollectionMethodInterceptor.java
@@ -37,8 +37,11 @@ import org.skywalking.apm.agent.core.plugin.interceptor.enhance.MethodInterceptR
 import org.skywalking.apm.network.trace.component.ComponentsDefine;
 
 /**
- * {@link MongoDBCollectionMethodInterceptor} intercept {@link com.mongodb.DBCollectionImpl}{@link com.mongodb.DBCollection}class,
- * create the exit span when the client call the interceptor methods.
+ * {@link MongoDBCollectionMethodInterceptor}create the exit span when the client call the interceptor methods.
+ * <p>
+ * {@link MongoDBCollectionMethodInterceptor} intercept  constructor of {@link com.mongodb.DBCollection}or {@link com.mongodb.DBCollectionImpl} for
+ * record the ServerAddress.
+ *
  */
 
 public class MongoDBCollectionMethodInterceptor implements InstanceMethodsAroundInterceptor, InstanceConstructorInterceptor {
diff --git a/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java b/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java
index 8b7940618..614e032d8 100644
--- a/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java
+++ b/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java
@@ -204,7 +204,7 @@ public class MongoDBMethodInterceptor implements InstanceMethodsAroundIntercepto
             ServerAddress address = description.getAddress();
             peers.append(address.getHost() + ":" + address.getPort() + ";");
         }
-        
+
         objInst.setSkyWalkingDynamicField(peers.subSequence(0, peers.length() - 1).toString());
     }
 }