diff --git a/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyCourseServiceImpl.java b/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyCourseServiceImpl.java
index cba83a6e..0f4b94d5 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyCourseServiceImpl.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudyCourseServiceImpl.java
@@ -819,7 +819,7 @@ public class StudyCourseServiceImpl implements IStudyCourseService{
 				query.addFilter(FieldFilters.eq("aid", sc.getAid()));
 			}
 			// 25.11.25新增：添加基于时间的查询条件
-			if (sc.getQueryStartTime() != null && sc.getQueryFinishTime() != null) {
+			if (StringUtils.isNotBlank(sc.getQueryStartTime()) && StringUtils.isNotBlank(sc.getQueryFinishTime())) {
 				// 开始结束时间均传入的情况，实现筛选逻辑
 				// (startTime >= 查询开始时间 AND startTime <= 查询结束时间) OR (finishTime >= 查询开始时间 AND finishTime <= 查询结束时间)
 				// 这样兼容查询结束时间为空值的情况，因为学员课程未结束时没有结束时间
@@ -836,13 +836,13 @@ public class StudyCourseServiceImpl implements IStudyCourseService{
 			} else {
 				// 只输出单个参数情况
 				// 筛选开始时间
-				if (sc.getQueryStartTime() != null) {
+				if (StringUtils.isNotBlank(sc.getQueryStartTime())) {
 					LocalDate startDate = LocalDate.parse(sc.getQueryStartTime());
 					LocalDateTime startDateTime = startDate.atStartOfDay();
 					query.addFilter(FieldFilters.ge("startTime", startDateTime));
 				}
 				// 筛选结束时间
-				if (sc.getQueryFinishTime() != null) {
+				if (StringUtils.isNotBlank(sc.getQueryFinishTime())) {
 					LocalDate finishDate = LocalDate.parse(sc.getQueryFinishTime());
 					LocalDateTime finishDateTime = finishDate.atTime(LocalTime.MAX);
 					query.addFilter(FieldFilters.le("finishTime", finishDateTime));