diff --git a/skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/PluginCfg.java b/skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/PluginCfg.java
index 2e0070db6..a0ea8cc98 100644
--- a/skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/PluginCfg.java
+++ b/skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/PluginCfg.java
@@ -4,7 +4,8 @@ import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
-import java.util.HashSet;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Set;
 
 import com.ai.cloud.skywalking.util.StringUtil;
@@ -12,7 +13,7 @@ import com.ai.cloud.skywalking.util.StringUtil;
 public class PluginCfg {
 	public final static PluginCfg CFG = new PluginCfg();
 	
-	private Set<String> interceptorClassList = new HashSet<String>();
+	private List<String> interceptorClassList = new ArrayList<String>();
 	
 	private PluginCfg(){}
 	
@@ -30,7 +31,7 @@ public class PluginCfg {
 		}
 	}
 	
-	public Set<String> getInterceptorClassList(){
+	public List<String> getInterceptorClassList(){
 		return interceptorClassList;
 	}
 }
diff --git a/skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/EnhanceClazz4Interceptor.java b/skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/EnhanceClazz4Interceptor.java
index 6f91afd59..bfe215db4 100644
--- a/skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/EnhanceClazz4Interceptor.java
+++ b/skywalking-api/src/main/java/com/ai/cloud/skywalking/plugin/interceptor/EnhanceClazz4Interceptor.java
@@ -1,11 +1,10 @@
 package com.ai.cloud.skywalking.plugin.interceptor;
 
-import static net.bytebuddy.matcher.ElementMatchers.isConstructor;
-import static net.bytebuddy.matcher.ElementMatchers.named;
 import static net.bytebuddy.matcher.ElementMatchers.any;
+import static net.bytebuddy.matcher.ElementMatchers.named;
 import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
 
-import java.util.Set;
+import java.util.List;
 
 import net.bytebuddy.ByteBuddy;
 import net.bytebuddy.dynamic.ClassFileLocator;
@@ -35,7 +34,7 @@ public class EnhanceClazz4Interceptor {
 	}
 
 	public void enhance() {
-		Set<String> interceptorClassList = PluginCfg.CFG
+		List<String> interceptorClassList = PluginCfg.CFG
 				.getInterceptorClassList();
 
 		for (String interceptorClassName : interceptorClassList) {