diff --git a/servers/boe-server-all/src/main/java/com/xboe/school/study/api/StudyCourseApi.java b/servers/boe-server-all/src/main/java/com/xboe/school/study/api/StudyCourseApi.java
index 37e9b9c3..fed78891 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/school/study/api/StudyCourseApi.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/school/study/api/StudyCourseApi.java
@@ -451,8 +451,8 @@ public class StudyCourseApi extends ApiBaseController{
 				map.put("学习开始时间", studyCourse1.getStartTime());
 				// 结束时间为空的，说明还没学习结束（有值）
 				map.put("学习结束时间", studyCourse1.getFinishTime());
-				// 学习时长：学习总时间是秒，现在要求的学习时间是分钟，向上取整，1秒算1分钟，60秒算1分钟，61秒算2分钟
-				map.put("学习时长（分）", studyCourse1.getTotalDuration() == null ? null : (int) Math.ceil(studyCourse1.getTotalDuration() / 60.0));
+                // 学习时长（保留两位小数）：
+                map.put("学习时长（分）", studyCourse1.getTotalDuration() == null ? null : String.format("%.2f", studyCourse1.getTotalDuration() / 60.0));
 				// 学习状态需要转换
 				String statusText = "";
 				if (studyCourse1.getStatus() != null) {