diff --git a/src/main/java/com/sztzjy/resource_center/controller/api/CaseApi.java b/src/main/java/com/sztzjy/resource_center/controller/api/CaseApi.java
index ae7c27e..cdc2f25 100644
--- a/src/main/java/com/sztzjy/resource_center/controller/api/CaseApi.java
+++ b/src/main/java/com/sztzjy/resource_center/controller/api/CaseApi.java
@@ -379,6 +379,7 @@ public class CaseApi {
     @ApiOperation("展示案例题详细信息")
     @PostMapping("selectTrainingByIds")
     public List<TrainingDto> selectTrainingByIds(@RequestBody List<String> caseStepIdList) {
-        return caseQuestionStepMapper.selectTrainingByIds(caseStepIdList);
+        List<TrainingDto> trainingDtos = caseQuestionStepMapper.selectTrainingByIds(caseStepIdList);
+        return trainingDtos;
     }
 }
diff --git a/src/main/resources/mapper/SysCaseQuestionStepMapper.xml b/src/main/resources/mapper/SysCaseQuestionStepMapper.xml
index df3d6d2..fd39172 100644
--- a/src/main/resources/mapper/SysCaseQuestionStepMapper.xml
+++ b/src/main/resources/mapper/SysCaseQuestionStepMapper.xml
@@ -421,18 +421,15 @@
     </resultMap>
 
     <select id="selectTrainingByIds" resultMap="DtoBaseResultMap">
-        SELECT SUM(sqs.score) AS total_steps_score, sqs.case_id,COUNT(sqs.case_step_id) AS total_steps_count, sq.title,
-        scc.three_name
+        SELECT SUM(sqs.score) AS total_steps_score, sqs.case_id,COUNT(sqs.case_step_id) AS total_steps_count, sq.title, s3.three_name
         FROM sys_case_question_steps sqs
         JOIN sys_case_questions sq ON sqs.case_id = sq.case_id
-        JOIN sys_three_catalog scc
-        JOIN sys_topic_and_course st ON st.three_id = scc.three_id
+        JOIN sys_topic_and_course s3 ON sq.case_id = s3.topic_id
         WHERE sqs.case_id IN
         <foreach item="item" collection="list" open="(" separator="," close=")">
             #{item}
         </foreach>
-        and st.topic_id = sqs.case_id
-        GROUP BY sq.title, scc.three_name,sqs.case_id;
+        GROUP BY sq.title, s3.three_name,sqs.case_id;
     </select>