diff --git a/src/main/java/com/peanut/modules/common/service/impl/ClassEntityServiceImpl.java b/src/main/java/com/peanut/modules/common/service/impl/ClassEntityServiceImpl.java
index 6047dc0d..966ef94a 100644
--- a/src/main/java/com/peanut/modules/common/service/impl/ClassEntityServiceImpl.java
+++ b/src/main/java/com/peanut/modules/common/service/impl/ClassEntityServiceImpl.java
@@ -634,6 +634,10 @@ public class ClassEntityServiceImpl extends ServiceImpl<ClassEntityDao, ClassEnt
         Map<String,Object> result = new HashMap<>();
         result.put("class",classEntity);
         result.put("classModel",classModel);
+        if (classEntity.getStartTime()!=null){
+            Date studyEndTime = DateUtils.addDateDays(classEntity.getStartTime(),classModel.getDays()-1);
+            classEntity.setStudyEndTime(DateUtils.stringToDate(DateUtils.format(studyEndTime)+" 23:59:59","yyyy-MM-dd HH:mm:ss"));
+        }
         result.put("examStartTime","");
         result.put("examEndTime","");
         result.put("examEndDays","");