diff --git a/backend/src/main/java/io/metersphere/api/service/ApiTestDelService.java b/backend/src/main/java/io/metersphere/api/service/ApiTestDelService.java
new file mode 100644
index 0000000000..ff31941ece
--- /dev/null
+++ b/backend/src/main/java/io/metersphere/api/service/ApiTestDelService.java
@@ -0,0 +1,61 @@
+package io.metersphere.api.service;
+
+import io.metersphere.base.domain.*;
+import io.metersphere.base.mapper.ApiDefinitionMapper;
+import io.metersphere.base.mapper.ApiModuleMapper;
+import io.metersphere.base.mapper.ApiScenarioMapper;
+import io.metersphere.base.mapper.ApiScenarioModuleMapper;
+import org.apache.commons.collections4.CollectionUtils;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import javax.annotation.Resource;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+@Transactional
+/**
+ * 接口测试所有级联删除资源
+ */
+public class ApiTestDelService {
+    @Resource
+    private ApiDefinitionService apiDefinitionService;
+    @Resource
+    private ApiAutomationService apiAutomationService;
+    @Resource
+    private ApiScenarioMapper apiScenarioMapper;
+    @Resource
+    private ApiDefinitionMapper apiDefinitionMapper;
+    @Resource
+    private ApiModuleMapper apiModuleMapper;
+    @Resource
+    private ApiScenarioModuleMapper apiScenarioModuleMapper;
+
+    public void delete(String projectId) {
+        ApiDefinitionExample example = new ApiDefinitionExample();
+        example.createCriteria().andProjectIdEqualTo(projectId);
+        // api and case
+        List<String> apiIds = apiDefinitionMapper.selectByExample(example).stream().map(ApiDefinition::getId).collect(Collectors.toList());
+        if (CollectionUtils.isNotEmpty(apiIds)) {
+            apiDefinitionService.deleteBatch(apiIds);
+        }
+        // scenario
+        ApiScenarioExample scenarioExample = new ApiScenarioExample();
+        scenarioExample.createCriteria().andProjectIdEqualTo(projectId);
+        List<String> scenarios = apiScenarioMapper.selectByExample(scenarioExample).stream().map(ApiScenario::getId).collect(Collectors.toList());
+        if (CollectionUtils.isNotEmpty(scenarios)) {
+            apiAutomationService.deleteBatch(scenarios);
+        }
+        // api module
+        ApiModuleExample moduleExample = new ApiModuleExample();
+        moduleExample.createCriteria().andProjectIdEqualTo(projectId);
+        apiModuleMapper.deleteByExample(moduleExample);
+
+        // scenario module
+        ApiScenarioModuleExample scenarioModuleExample = new ApiScenarioModuleExample();
+        scenarioModuleExample.createCriteria().andProjectIdEqualTo(projectId);
+        apiScenarioModuleMapper.deleteByExample(scenarioModuleExample);
+
+    }
+}
diff --git a/backend/src/main/java/io/metersphere/service/ProjectService.java b/backend/src/main/java/io/metersphere/service/ProjectService.java
index 9741ef757d..459b343dc7 100644
--- a/backend/src/main/java/io/metersphere/service/ProjectService.java
+++ b/backend/src/main/java/io/metersphere/service/ProjectService.java
@@ -5,6 +5,7 @@ import io.metersphere.api.dto.DeleteAPITestRequest;
 import io.metersphere.api.dto.QueryAPITestRequest;
 import io.metersphere.api.service.APITestService;
 import io.metersphere.api.service.ApiAutomationService;
+import io.metersphere.api.service.ApiTestDelService;
 import io.metersphere.api.service.ApiTestEnvironmentService;
 import io.metersphere.api.tcp.TCPPool;
 import io.metersphere.base.domain.*;
@@ -89,7 +90,8 @@ public class ProjectService {
     private ExtUserMapper extUserMapper;
     @Resource
     private ScheduleService scheduleService;
-
+    @Resource
+    private ApiTestDelService apiTestDelService;
     @Value("${tcp.mock.port}")
     private String tcpMockPorts;
 
@@ -189,6 +191,7 @@ public class ProjectService {
 
         // 删除项目下 接口测试 相关
         deleteAPIResourceByProjectId(projectId);
+        apiTestDelService.delete(projectId);
 
         // User Group
         deleteProjectUserGroup(projectId);