diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/sql/factory/DbBuilerFactory.java b/panda-jdbc/src/main/java/org/panda/jdbc/sql/factory/DbBuilerFactory.java
index 5a9cd26..a0ed31b 100644
--- a/panda-jdbc/src/main/java/org/panda/jdbc/sql/factory/DbBuilerFactory.java
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/sql/factory/DbBuilerFactory.java
@@ -9,6 +9,10 @@ import org.panda.jdbc.sql.builder.AbstractDbBuiler;
  * @author qi
  */
 public interface DbBuilerFactory {
-
+    /**
+     * 返回sql构造器
+     * @param dbType
+     * @return
+     */
     AbstractDbBuiler getSqlBuilder(String dbType);
 }