diff --git a/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/AbstractTraceSegment.java b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/AbstractTraceSegment.java
new file mode 100644
index 000000000..7495792e5
--- /dev/null
+++ b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/AbstractTraceSegment.java
@@ -0,0 +1,7 @@
+package org.skywalking.apm.trace;
+
+/**
+ * @author wusheng
+ */
+public interface AbstractTraceSegment {
+}
diff --git a/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/TraceSegment.java b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/TraceSegment.java
index ab79cc159..9a16e383f 100644
--- a/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/TraceSegment.java
+++ b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/TraceSegment.java
@@ -19,7 +19,7 @@ import java.util.List;
  * <p>
  * Created by wusheng on 2017/2/17.
  */
-public class TraceSegment {
+public class TraceSegment implements AbstractTraceSegment{
     private static final String ID_TYPE = "Segment";
 
     /**
diff --git a/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/UnsampleTraceSegment.java b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/UnsampleTraceSegment.java
new file mode 100644
index 000000000..2bc774745
--- /dev/null
+++ b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/UnsampleTraceSegment.java
@@ -0,0 +1,7 @@
+package org.skywalking.apm.trace;
+
+/**
+ * @author wusheng
+ */
+public class UnsampleTraceSegment {
+}