diff --git a/laws-modules/src/main/java/com/jero/modules/activiti/controller/ModelerController.java b/laws-modules/src/main/java/com/jero/modules/activiti/controller/ModelerController.java
index 02bb3479..30b2b881 100644
--- a/laws-modules/src/main/java/com/jero/modules/activiti/controller/ModelerController.java
+++ b/laws-modules/src/main/java/com/jero/modules/activiti/controller/ModelerController.java
@@ -65,6 +65,9 @@ public class ModelerController {
     private ProcessNodeService processNodeService;
     @Resource
     private ProcessModelNodeService processModelNodeService;
+    @Resource
+    private RuntimeService runtimeService;
+
     //@Autowired
     //private IFormVariableService iFormVariableService;
     //@Autowired
@@ -77,6 +80,13 @@ public class ModelerController {
     @PostMapping("/importModelFile")
     public Result<String> importModelFile(@RequestPart(value = "file", required = false) MultipartFile file,
                                 @RequestParam(value = "name", required = false) String name) throws Exception {
+        //先删除旧的model
+        ModelQuery modelQuery = repositoryService.createModelQuery();
+        List<Model> list = modelQuery.modelName(name).list();
+        for (Model model : list) {
+            repositoryService.deleteModel(model.getId());
+        }
+
         InputStream fileInputStream = file.getInputStream();
         XMLInputFactory xif = XMLInputFactory.newInstance();
         InputStreamReader in = new InputStreamReader(fileInputStream, "UTF-8");