diff --git a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseHandsOnService.java b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseHandsOnService.java
index e321a666..25c7c5ae 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseHandsOnService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseHandsOnService.java
@@ -329,7 +329,7 @@ public class TeacherOpenCourseHandsOnService extends CoreBaseService<TeacherOpen
 
         }
         List<StudentHandsOnVO> studentHandsOnVOS = new ArrayList<>();
-        BigDecimal b = BigDecimal.ONE;
+        BigDecimal b = BigDecimal.ZERO;
         for (TeacherOpenCourseHandsOn handsOn : handsOnList) {
             StudentHandsOnVO studentHandsOnVO = new StudentHandsOnVO();
             Long handsOnId = handsOn.getHandsOnId();