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 c79e4d06..0c5939bd 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
@@ -30,7 +30,6 @@ import com.xboe.module.course.entity.CourseTeacher;
 import com.xboe.module.course.service.ICourseContentService;
 import com.xboe.module.course.service.ICourseSectionService;
 import com.xboe.module.course.service.ICourseService;
-import com.xboe.module.course.service.ICourseTeacherService;
 import com.xboe.module.teacher.entity.Teacher;
 import com.xboe.module.teacher.service.ITeacherService;
 import com.xboe.school.study.dto.StudyContentDto;
@@ -70,9 +69,6 @@ public class StudyCourseApi extends ApiBaseController{
 	@Autowired
 	private ICourseSectionService sectionService;
 
-	@Autowired
-	private ICourseTeacherService courseTeacherService;
-	
 	@Autowired
 	private ITeacherService teacherService;