diff --git a/src/main/resources/mapper/course/CourseDao.xml b/src/main/resources/mapper/course/CourseDao.xml
index 4a73c7d1..c5e96f94 100644
--- a/src/main/resources/mapper/course/CourseDao.xml
+++ b/src/main/resources/mapper/course/CourseDao.xml
@@ -39,7 +39,7 @@
         c.dy_show as dyShow,
         c.sort,
         0 as goodNum,
-        0 as courseDetailsCount,
+        (select count(*) from course_details d where d.course_id=c.course_id ) as courseDetailsCount,
         null AS courseDetailsName,
         null AS courseDetailsId,
         0 as weekGoodNum,