diff --git a/src/main/java/com/itfsw/mybatis/generator/plugins/SelectSelectivePlugin.java b/src/main/java/com/itfsw/mybatis/generator/plugins/SelectSelectivePlugin.java
index 481b55c..89612b3 100644
--- a/src/main/java/com/itfsw/mybatis/generator/plugins/SelectSelectivePlugin.java
+++ b/src/main/java/com/itfsw/mybatis/generator/plugins/SelectSelectivePlugin.java
@@ -189,6 +189,13 @@ public class SelectSelectivePlugin extends BasePlugin {
         if (stringHasValue(introspectedTable.getSelectByExampleQueryId())) {
             selectByExampleSelectiveEle.addElement(new TextElement("'" + introspectedTable.getSelectByExampleQueryId() + "' as QUERYID,"));
         }
+
+        // issues#20
+        XmlElement ifDistinctElement = new XmlElement("if");
+        ifDistinctElement.addAttribute(new Attribute("test", "example.distinct"));
+        ifDistinctElement.addElement(new TextElement("distinct"));
+        selectByExampleSelectiveEle.addElement(ifDistinctElement);
+
         selectByExampleSelectiveEle.addElement(columnsEle);
         selectByExampleSelectiveEle.addElement(new TextElement("from " + introspectedTable.getAliasedFullyQualifiedTableNameAtRuntime()));
 
diff --git a/src/test/java/com/itfsw/mybatis/generator/plugins/SelectSelectivePluginTest.java b/src/test/java/com/itfsw/mybatis/generator/plugins/SelectSelectivePluginTest.java
index 1958f45..42abedf 100644
--- a/src/test/java/com/itfsw/mybatis/generator/plugins/SelectSelectivePluginTest.java
+++ b/src/test/java/com/itfsw/mybatis/generator/plugins/SelectSelectivePluginTest.java
@@ -79,7 +79,7 @@ public class SelectSelectivePluginTest {
 
                 // 2. 执行sql
                 List list = (List) tbMapper.invoke("selectByExampleSelective", tbExample.getObject(), columns1);
-                Assert.assertEquals(list.size(), 3);
+                Assert.assertEquals(list.size(), 4);
                 int index = 0;
                 for (Object obj : list) {
                     if (index == 1) {
@@ -99,6 +99,13 @@ public class SelectSelectivePluginTest {
 
                     index++;
                 }
+
+                // 3. 测试 distinct
+                tbExample.invoke("setDistinct", true);
+                String sql1 = SqlHelper.getFormatMapperSql(tbMapper.getObject(), "selectByExampleSelective", tbExample.getObject(), columns1);
+                Assert.assertEquals(sql1, "select distinct field1 from tb WHERE (  id < '100' )  order by field2 asc");
+                List list1 = (List) tbMapper.invoke("selectByExampleSelective", tbExample.getObject(), columns1);
+                Assert.assertEquals(list1.size(), 3);
             }
         });
     }
@@ -228,7 +235,7 @@ public class SelectSelectivePluginTest {
 
                 // 2. 执行sql
                 List list = (List) tbMapper.invoke("selectByExampleSelective", tbExample.getObject(), columns1);
-                Assert.assertEquals(list.size(), 3);
+                Assert.assertEquals(list.size(), 4);
                 int index = 0;
                 for (Object obj : list) {
                     if (index == 0) {
@@ -282,7 +289,7 @@ public class SelectSelectivePluginTest {
 
                 // 2. 执行sql
                 List list = (List) tbMapper.invoke("selectByExampleSelective", tbExample.getObject(), columns1);
-                Assert.assertEquals(list.size(), 3);
+                Assert.assertEquals(list.size(), 4);
                 int index = 0;
                 for (Object obj : list) {
                     if (index == 0) {
diff --git a/src/test/resources/scripts/SelectSelectivePlugin/init.sql b/src/test/resources/scripts/SelectSelectivePlugin/init.sql
index aef1e81..b83921c 100644
--- a/src/test/resources/scripts/SelectSelectivePlugin/init.sql
+++ b/src/test/resources/scripts/SelectSelectivePlugin/init.sql
@@ -32,6 +32,7 @@ CREATE TABLE `tb` (
 INSERT INTO `tb` VALUES ('1', 'fd1', null);
 INSERT INTO `tb` VALUES ('2', null, '2');
 INSERT INTO `tb` VALUES ('3', 'fd3', '3');
+INSERT INTO `tb` VALUES ('4', 'fd3', '4');
 
 -- ----------------------------
 -- Table structure for tb_blobs