diff --git a/servers/boe-server-all/src/main/java/com/xboe/module/course/dao/CourseDao.java b/servers/boe-server-all/src/main/java/com/xboe/module/course/dao/CourseDao.java
index c4ed374f..009a620c 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/module/course/dao/CourseDao.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/module/course/dao/CourseDao.java
@@ -1,5 +1,6 @@
 package com.xboe.module.course.dao;
 
+import java.math.BigInteger;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
@@ -132,7 +133,8 @@ public class CourseDao extends BaseDao<Course> {
 		List<CoursePageVo> coursePageVos = new ArrayList<>();
 		for (Object[] row : resultList) {
 			CoursePageVo vo = new CoursePageVo();
-			vo.setId((String) row[0]);
+			BigInteger id = (BigInteger) row[0];
+			vo.setId(id.toString());
 			vo.setName((String) row[1]);
 			vo.setCoverImg((String) row[2]);
 			vo.setSysType1((String) row[3]);