diff --git a/web/src/main/java/com/ibeetl/jlw/service/CompetitionService.java b/web/src/main/java/com/ibeetl/jlw/service/CompetitionService.java
index c3f293ce..964b550f 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/CompetitionService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/CompetitionService.java
@@ -18,6 +18,7 @@ import com.ibeetl.jlw.web.query.*;
 import org.beetl.sql.core.SqlId;
 import org.beetl.sql.core.engine.PageQuery;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -47,7 +48,7 @@ public class CompetitionService extends CoreBaseService<Competition>{
     @Autowired private CompetitionTaskSecondQuestionDao competitionTaskSecondQuestionDao;
     @Autowired private CompetitionTaskSecondQuestionStepService competitionTaskSecondQuestionStepService;
     @Autowired private CompetitionTaskSecondQuestionStepDao competitionTaskSecondQuestionStepDao;
-
+    @Lazy
     @Autowired private StudentService studentService;
 
     @Autowired private CompetitionTeacherEvaluationService competitionTeacherEvaluationService;
diff --git a/web/src/main/java/com/ibeetl/jlw/service/ExamService.java b/web/src/main/java/com/ibeetl/jlw/service/ExamService.java
index 1fe3fecf..1b0386c4 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/ExamService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/ExamService.java
@@ -16,6 +16,7 @@ import com.ibeetl.jlw.web.query.*;
 import org.beetl.sql.core.SqlId;
 import org.beetl.sql.core.engine.PageQuery;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -38,7 +39,7 @@ public class ExamService extends CoreBaseService<Exam>{
     @Autowired private ResourcesQuestionService resourcesQuestionService;
     @Autowired private ExamTaskOneQuestionService examTaskOneQuestionService;
     @Autowired private ExamTaskOneQuestionDao examTaskOneQuestionDao;
-
+    @Lazy
     @Autowired private StudentService studentService;
     
     @Autowired private ResourcesCompetitionService resourcesCompetitionService;
diff --git a/web/src/main/java/com/ibeetl/jlw/service/TeacherService.java b/web/src/main/java/com/ibeetl/jlw/service/TeacherService.java
index 3edc2243..20f0b07b 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/TeacherService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/TeacherService.java
@@ -37,6 +37,7 @@ import org.jsoup.nodes.Attributes;
 import org.jsoup.nodes.Document;
 import org.jsoup.select.Elements;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.validation.annotation.Validated;
@@ -76,7 +77,7 @@ public class TeacherService extends CoreBaseService<Teacher> {
     @Autowired private UniversitiesCollegesDao universitiesCollegesDao;
 
     @Autowired private StudentService studentService;
-
+    @Lazy
     @Autowired private TeacherService teacherService;
 
     @Autowired private CompetitionTeacherEvaluationService competitionTeacherEvaluationService;