diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/EntrySpan.java b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/EntrySpan.java
index cae1c6e3e13c86c7d6842037b8eedb53f022dc2c..2870a4b4065249ee10c81f3e04b217df3fd1767d 100644
--- a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/EntrySpan.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/EntrySpan.java
@@ -16,11 +16,8 @@
  *
  */
 
-
 package org.apache.skywalking.apm.agent.core.context.trace;
 
-import java.util.LinkedList;
-import java.util.List;
 import org.apache.skywalking.apm.agent.core.dictionary.DictionaryUtil;
 import org.apache.skywalking.apm.network.proto.SpanObject;
 import org.apache.skywalking.apm.network.trace.component.Component;