diff --git a/client-adapter/tablestore/src/test/java/com/alibaba/otter/canal/client/adapter/tablestore/TestConstant.java b/client-adapter/tablestore/src/test/java/com/alibaba/otter/canal/client/adapter/tablestore/TestConstant.java
index 6bb2ffa666..d47d98396b 100644
--- a/client-adapter/tablestore/src/test/java/com/alibaba/otter/canal/client/adapter/tablestore/TestConstant.java
+++ b/client-adapter/tablestore/src/test/java/com/alibaba/otter/canal/client/adapter/tablestore/TestConstant.java
@@ -6,6 +6,9 @@
 
 public class TestConstant {
 
+    /**
+     * db配置
+     */
     public final static String    jdbcUrl      = "jdbc:mysql://xxxxxxxxx";
     public final static String    jdbcUser     = "xxxxxx";
     public final static String    jdbcPassword = "xxxxxx";