diff --git a/src/main/resources/mappers/system/SelectMapper.xml b/src/main/resources/mappers/system/SelectMapper.xml
index befaa8b..051974c 100644
--- a/src/main/resources/mappers/system/SelectMapper.xml
+++ b/src/main/resources/mappers/system/SelectMapper.xml
@@ -37,7 +37,10 @@
 			t.gx_name as name
 		from tb_gx t
 		<where>
-			major_id = #{pid} and is_active = '1'
+			 is_active = '1'
+			<if test="pid != null">
+				and major_id = #{pid}
+			</if>
 		</where>
 	</select>
     <select id="getProjectSelect" resultType="com.bonus.imgTool.system.vo.SelectVo">