diff --git a/src/main/resources/mapper/tms/ExperimentalTeachingDao.xml b/src/main/resources/mapper/tms/ExperimentalTeachingDao.xml
index 20f318c..8c28e2e 100644
--- a/src/main/resources/mapper/tms/ExperimentalTeachingDao.xml
+++ b/src/main/resources/mapper/tms/ExperimentalTeachingDao.xml
@@ -55,7 +55,19 @@
         experimental_name,
         project_id,
         project_name,
-        ( SELECT count( * ) FROM tms_project_record WHERE projectId = project_id AND tms_project_record.isdel = 0 ) AS experimental_number,
+        (
+        SELECT
+        count( * )
+        FROM
+        tms_project_record tpr,
+        tms_experimental_report ter
+        WHERE
+        tpr.projectId = t.project_id
+        AND ter.eventId = tpr.recordId
+        AND ter.projectId = t.id
+        AND tpr.isdel = 0
+        AND ter.isdel = 0
+        ) AS experimental_number,
         experiment_duration,
         type,
         start_time,