diff --git a/src/components/bpmnProcessDesigner/package/penal/custom-config/components/UserTask.vue b/src/components/bpmnProcessDesigner/package/penal/custom-config/components/UserTaskCustomConfig.vue
similarity index 100%
rename from src/components/bpmnProcessDesigner/package/penal/custom-config/components/UserTask.vue
rename to src/components/bpmnProcessDesigner/package/penal/custom-config/components/UserTaskCustomConfig.vue
diff --git a/src/components/bpmnProcessDesigner/package/penal/custom-config/data.ts b/src/components/bpmnProcessDesigner/package/penal/custom-config/data.ts
index 8870f021..a45355e2 100644
--- a/src/components/bpmnProcessDesigner/package/penal/custom-config/data.ts
+++ b/src/components/bpmnProcessDesigner/package/penal/custom-config/data.ts
@@ -1,10 +1,10 @@
-import UserTask from './components/UserTask.vue'
+import UserTaskCustomConfig from './components/UserTaskCustomConfig.vue'
 import BoundaryEventTimer from './components/BoundaryEventTimer.vue'
 
 export const CustomConfigMap = {
   UserTask: {
     name: '用户任务',
-    componet: UserTask
+    componet: UserTaskCustomConfig
   },
   BoundaryEventTimerEventDefinition: {
     name: '定时边界事件(非中断)',
diff --git a/src/components/bpmnProcessDesigner/package/penal/multi-instance/ElementMultiInstance.vue b/src/components/bpmnProcessDesigner/package/penal/multi-instance/ElementMultiInstance.vue
index 1ee68e86..de2fb0d7 100644
--- a/src/components/bpmnProcessDesigner/package/penal/multi-instance/ElementMultiInstance.vue
+++ b/src/components/bpmnProcessDesigner/package/penal/multi-instance/ElementMultiInstance.vue
@@ -301,13 +301,20 @@ const approveMethod = ref()
 const approveRatio = ref(100)
 const otherExtensions = ref()
 const getElementLoopNew = () => {
-  const extensionElements = bpmnElement.value.businessObject?.extensionElements ?? []
+  const extensionElements =
+    bpmnElement.value.businessObject?.extensionElements ??
+    bpmnInstances().moddle.create('bpmn:ExtensionElements', { values: [] })
   approveMethod.value = extensionElements.values.filter(
     (ex) => ex.$type === `${prefix}:ApproveMethod`
   )?.[0]?.value
 
   otherExtensions.value =
     extensionElements.values.filter((ex) => ex.$type !== `${prefix}:ApproveMethod`) ?? []
+
+  if (!approveMethod.value) {
+    approveMethod.value = ApproveMethodType.SEQUENTIAL_APPROVE
+    updateLoopCharacteristics()
+  }
 }
 const onApproveMethodChange = () => {
   approveRatio.value = 100
diff --git a/src/components/bpmnProcessDesigner/package/penal/task/task-components/UserTask.vue b/src/components/bpmnProcessDesigner/package/penal/task/task-components/UserTask.vue
index ecd6fbf4..07bb3ed7 100644
--- a/src/components/bpmnProcessDesigner/package/penal/task/task-components/UserTask.vue
+++ b/src/components/bpmnProcessDesigner/package/penal/task/task-components/UserTask.vue
@@ -163,7 +163,7 @@ const resetTaskForm = () => {
     return
   }
 
-  const extensionElements = businessObject?.extensionElements ?? []
+  const extensionElements = businessObject?.extensionElements ?? bpmnInstances().moddle.create('bpmn:ExtensionElements', { values: [] })
   userTaskForm.value.candidateStrategy = extensionElements.values?.filter(
     (ex) => ex.$type === `${prefix}:CandidateStrategy`
   )?.[0]?.value