diff --git a/renren-admin/src/main/resources/mapper/resource/ResourceDao.xml b/renren-admin/src/main/resources/mapper/resource/ResourceDao.xml
index 2a65dd18..26bc1283 100644
--- a/renren-admin/src/main/resources/mapper/resource/ResourceDao.xml
+++ b/renren-admin/src/main/resources/mapper/resource/ResourceDao.xml
@@ -1516,9 +1516,18 @@
     </select>
 
     <select id="selectDevelopDocResource" resultType="java.util.Map">
-        SELECT tdr.id, tdr.name as title, tdr.type, tda.attr_value as doc FROM tb_data_resource tdr right join
-        tb_data_attr tda on tdr.id=tda.data_resource_id
-        where tdr.del_flag != 1 and tda.attr_type='技术文档'
+        SELECT DISTINCT
+        tdr.id,
+        tdr.NAME AS title,
+        tdr.type,
+        tda.attr_value AS doc
+        FROM
+        tb_data_resource tdr
+        RIGHT JOIN tb_data_attr tda ON tdr.id = tda.data_resource_id
+        WHERE
+        tdr.del_flag != 1
+        AND tda.del_flag = 0
+        AND tda.attr_type = '技术文档'
     </select>
 
     <select id="resourceInstallationOrDataResourceDetails" parameterType="java.util.Map" resultType="java.util.Map">