diff --git a/backend/src/main/java/io/metersphere/base/mapper/ext/ExtTestPlanTestCaseMapper.xml b/backend/src/main/java/io/metersphere/base/mapper/ext/ExtTestPlanTestCaseMapper.xml
index aeec0311c8..f639629980 100644
--- a/backend/src/main/java/io/metersphere/base/mapper/ext/ExtTestPlanTestCaseMapper.xml
+++ b/backend/src/main/java/io/metersphere/base/mapper/ext/ExtTestPlanTestCaseMapper.xml
@@ -383,6 +383,7 @@
         select test_case.remark,
                test_plan_test_case.id as id,
                test_plan_test_case.*,
+               if(pa.type_value = 'false', cast(test_case.num as char), test_case.custom_num) as customNum,
                test_case.*,
                test_case_node.name    as model,
                project.name           as projectName
@@ -390,7 +391,8 @@
                  inner join test_case on test_plan_test_case.case_id = test_case.id
                  left join test_case_node on test_case_node.id = test_case.node_id
                  inner join project on project.id = test_case.project_id
-        where test_plan_test_case.id = #{testPlanTestCaseId}
+                 inner join project_application pa on project.id = pa.project_id and pa.type = 'CASE_CUSTOM_NUM'
+                 where test_plan_test_case.id = #{testPlanTestCaseId}
     </select>
 
     <select id="getExecResultByPlanId" resultType="java.lang.String">
diff --git a/frontend/src/business/components/track/plan/view/comonents/functional/FunctionalRelevance.vue b/frontend/src/business/components/track/plan/view/comonents/functional/FunctionalRelevance.vue
index 2b0edf9320..a3ec64e457 100644
--- a/frontend/src/business/components/track/plan/view/comonents/functional/FunctionalRelevance.vue
+++ b/frontend/src/business/components/track/plan/view/comonents/functional/FunctionalRelevance.vue
@@ -198,7 +198,7 @@ export default {
       this.page.condition.projectId = this.projectId;
       this.getProjectNode();
       this.getTestCases();
-      this.getProject();
+      this.getCustomNum();
     }
   },
   methods: {
@@ -215,11 +215,11 @@ export default {
     setProject(projectId) {
       this.projectId = projectId;
     },
-    getProject() {
-      this.$get("/project/get/" + this.projectId, result => {
+    getCustomNum() {
+      this.$get('/project_application/get/config/' + this.projectId + "/CASE_CUSTOM_NUM", result => {
         let data = result.data;
         if (data) {
-          this.customNum = data.customNum;
+          this.customNum = data.caseCustomNum;
         }
       });
     },
diff --git a/frontend/src/business/components/track/plan/view/comonents/functional/FunctionalTestCaseEdit.vue b/frontend/src/business/components/track/plan/view/comonents/functional/FunctionalTestCaseEdit.vue
index 72f3a86d1f..8e7e4ba01d 100644
--- a/frontend/src/business/components/track/plan/view/comonents/functional/FunctionalTestCaseEdit.vue
+++ b/frontend/src/business/components/track/plan/view/comonents/functional/FunctionalTestCaseEdit.vue
@@ -46,7 +46,7 @@
                     <el-row class="head-bar">
                       <el-col>
                         <el-divider content-position="left">
-                          <el-button class="test-case-name" type="text" @click="openTestTestCase(testCase)">{{ testCase.num }}-{{ testCase.name }}</el-button>
+                          <el-button class="test-case-name" type="text" @click="openTestTestCase(testCase)">{{ testCase.customNum }}-{{ testCase.name }}</el-button>
                         </el-divider>
                       </el-col>
                     </el-row>