diff --git a/src/main/java/com/sztzjy/financial_bigdata/config/Constant.java b/src/main/java/com/sztzjy/financial_bigdata/config/Constant.java
index 434d33a..49741df 100644
--- a/src/main/java/com/sztzjy/financial_bigdata/config/Constant.java
+++ b/src/main/java/com/sztzjy/financial_bigdata/config/Constant.java
@@ -21,6 +21,8 @@ public class Constant {
     public static final String INPUT_TYPE_TEACHER= "0";
     public static final String INPUT_TYPE_BUILT_IN= "1";
 
-
+    public static final String OBJECTIVE_TYPE_SINGLE= "single";
+    public static final String OBJECTIVE_TYPE_Many= "many";
+    public static final String OBJECTIVE_TYPE_JUDGE= "judge";
 
 }
diff --git a/src/main/java/com/sztzjy/financial_bigdata/mapper/SysObjectiveQuestionMapper.java b/src/main/java/com/sztzjy/financial_bigdata/mapper/SysObjectiveQuestionMapper.java
index 71ce274..de48d5c 100644
--- a/src/main/java/com/sztzjy/financial_bigdata/mapper/SysObjectiveQuestionMapper.java
+++ b/src/main/java/com/sztzjy/financial_bigdata/mapper/SysObjectiveQuestionMapper.java
@@ -35,4 +35,9 @@ public interface SysObjectiveQuestionMapper {
 
     @Select("SELECT SUM(CASE WHEN type = 0 THEN 1 ELSE 0 END) AS singleCount,SUM(CASE WHEN type = 1 THEN 1 ELSE 0 END) AS manyCount, SUM(CASE WHEN type = 2 THEN 1 ELSE 0 END) AS judgeCount FROM sys_objective_question where  school_id IN(999999999,#{schoolId})")
     TeaExamManageCountDto selectAllCount(@Param("schoolId") String schoolId);
+
+    List<SysObjectiveQuestion> selectObjectQuestionListByChapterId(String chapter_id);
+
+    List<SysObjectiveQuestion> selectRandomObjective(String chapterId);
+
 }
\ No newline at end of file
diff --git a/src/main/java/com/sztzjy/financial_bigdata/service/tea/ITeaObjectiveService.java b/src/main/java/com/sztzjy/financial_bigdata/service/tea/ITeaObjectiveService.java
index 548a942..2eb9916 100644
--- a/src/main/java/com/sztzjy/financial_bigdata/service/tea/ITeaObjectiveService.java
+++ b/src/main/java/com/sztzjy/financial_bigdata/service/tea/ITeaObjectiveService.java
@@ -21,4 +21,8 @@ public interface ITeaObjectiveService {
     Boolean batchDeleteObjective(List<String> objectiveIdList, String schoolId);
 
     PageInfo<SysObjectiveQuestion> selectObjectiveList(String schoolId, String courseId, String type, String content, Integer index, Integer size);
+
+    List<SysObjectiveQuestion> selectObjectQuestionListByChapterId(String chapter_id);
+
+    List<SysObjectiveQuestion> selectRandomObjective(String chapterId);
 }
diff --git a/src/main/java/com/sztzjy/financial_bigdata/service/tea/impl/TeaObjectiveServiceImpl.java b/src/main/java/com/sztzjy/financial_bigdata/service/tea/impl/TeaObjectiveServiceImpl.java
index 93e0169..e1d22a5 100644
--- a/src/main/java/com/sztzjy/financial_bigdata/service/tea/impl/TeaObjectiveServiceImpl.java
+++ b/src/main/java/com/sztzjy/financial_bigdata/service/tea/impl/TeaObjectiveServiceImpl.java
@@ -220,5 +220,20 @@ public class TeaObjectiveServiceImpl implements ITeaObjectiveService {
 
     }
 
+    @Override
+    public List<SysObjectiveQuestion> selectObjectQuestionListByChapterId(String chapter_id) {
+        SysObjectiveQuestionExample example = new SysObjectiveQuestionExample();
+        SysObjectiveQuestionExample.Criteria criteria = example.createCriteria();
+        criteria.andChapterIdEqualTo(chapter_id).andSchoolIdEqualTo(Constant.BUILT_IN_SCHOOL_ID);
+        List<SysObjectiveQuestion> objectiveQuestionList = objectiveQuestionMapper.selectByExample(example);
+        return objectiveQuestionList;
+    }
+
+    @Override
+    public List<SysObjectiveQuestion> selectRandomObjective(String chapterId) {
+        List<SysObjectiveQuestion> list=objectiveQuestionMapper.selectRandomObjective(chapterId);
+        return list;
+    }
+
 
 }
diff --git a/src/main/resources/mapper/SysObjectiveQuestionMapper.xml b/src/main/resources/mapper/SysObjectiveQuestionMapper.xml
index f009666..4c7a242 100644
--- a/src/main/resources/mapper/SysObjectiveQuestionMapper.xml
+++ b/src/main/resources/mapper/SysObjectiveQuestionMapper.xml
@@ -398,4 +398,36 @@
       school_id = #{schoolId,jdbcType=VARCHAR}
     where objective_id = #{objectiveId,jdbcType=VARCHAR}
   </update>
+  <select id="selectRandomObjective" parameterType="map" resultMap="SysObjectiveQuestion">
+    SELECT * FROM sys_objective_question
+    WHERE  chapter_id #{chapterId,jdbcType=VARCHAR}
+    ORDER BY RAND()
+      LIMIT 10
+  </select>
+
+
+  <select id="selectRandomObjective100" resultType="com.sztzjy.financial_bigdata.entity.SysObjectiveQuestion">
+    SELECT
+      *
+    FROM
+      sys_objective_question
+    WHERE
+      (type = 'single' AND inputType = '1' AND rownum = 35)
+    UNION
+    SELECT
+      *
+    FROM
+      sys_objective_question
+    WHERE
+      (type = 'many' AND inputType = '1' AND rownum = 5)
+    UNION
+    SELECT
+      *
+    FROM
+      sys_objective_question
+    WHERE
+      (type = 'judge' AND inputType = '1' AND rownum = 10)
+    ORDER BY
+      RAND()
+  </select>
 </mapper>
\ No newline at end of file