diff --git a/app/common/service/SendMsgCronJobService.php b/app/common/service/SendMsgCronJobService.php
index decce18..2d83efe 100644
--- a/app/common/service/SendMsgCronJobService.php
+++ b/app/common/service/SendMsgCronJobService.php
@@ -1189,7 +1189,7 @@ class SendMsgCronJobService
             }
 
 
-            if (!empty($subject_homework->subject_file_url)) {
+            if (!empty($subject_homework->homework_file_url)) {
 
                 $send_teacher_data = [
                     'touser' => $student_schedule->student_openid,