diff --git a/src/main/java/com/peanut/modules/common/controller/ClassExamController.java b/src/main/java/com/peanut/modules/common/controller/ClassExamController.java
index ac86aede..a118578c 100644
--- a/src/main/java/com/peanut/modules/common/controller/ClassExamController.java
+++ b/src/main/java/com/peanut/modules/common/controller/ClassExamController.java
@@ -255,8 +255,12 @@ public class ClassExamController {
                 .eq(ClassExamUser::getUserId,ShiroUtils.getUId())
                 .eq(ClassExamUser::getRelationId,params.get("courseId"))
                 .orderByDesc(ClassExamUser::getId));
-        Date nextTime = DateUtils.addDateDays(ZKExamUserList.get(0).getStartTime(),183);
-        return R.ok().put("nextZKTime",nextTime).put("nextLongTime",nextTime.getTime());
+        if (ZKExamUserList.size() == 0){
+            return R.ok().put("nextZKTime",null).put("nextLongTime",null);
+        }else {
+            Date nextTime = DateUtils.addDateDays(ZKExamUserList.get(0).getStartTime(),183);
+            return R.ok().put("nextZKTime",nextTime).put("nextLongTime",nextTime.getTime());
+        }
     }
 
     //试卷详情