diff --git a/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyServiceImpl.java b/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyServiceImpl.java
index b2b2042c..e69a33ec 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyServiceImpl.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyServiceImpl.java
@@ -7,6 +7,7 @@ import java.util.Map;
 
 import javax.transaction.Transactional;
 
+import com.xboe.school.study.entity.StudyCourse;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -216,6 +217,18 @@ public class StudyServiceImpl implements IStudyService{
 	@Override
 	@Transactional
 	public void updateLastTime(String studyContentId, int lastStudyTime,String aid) {
+		// 获取时长
+		StudyCourseItem sci = scItemDao.findOne(FieldFilters.eq("id", studyContentId),FieldFilters.eq("aid", aid));
+		Integer endTime = sci.getLastStudyTime();
+		// 间隔时长
+		int abs = 0;
+		if(lastStudyTime - endTime < 0){
+			//从头开始
+			abs = lastStudyTime;
+		}else{
+			// 获取时长
+			abs = lastStudyTime - endTime;
+		}
 		// 更新最后的学习时间点
 		LocalDateTime now=LocalDateTime.now();
 		UpdateBuilder update=UpdateBuilder.from(StudyCourseItem.class);
@@ -226,6 +239,14 @@ public class StudyServiceImpl implements IStudyService{
 		update.addUpdateField("lastTime", now);
 		scItemDao.update(update.builder());
 		//增加用户的学习时长,在api中调用
+
+		// 添加学习时长
+		String contentId = sci.getContentId();
+		UpdateBuilder updSc=UpdateBuilder.from(StudyCourse.class);
+
+		// 追加总时长
+		String sql="Update boe_study_course set total_duration=total_duration+"+abs+",status=(case when status<2 then 2 else status end),progress=(case when progress=0 then 1 else progress end) where id=?1";
+		scDao.sqlUpdate(sql,contentId);
 	}
 
 	@Override