diff --git a/src/components/BpmnDesign/panel/TaskPanel.vue b/src/components/BpmnDesign/panel/TaskPanel.vue
index ab045da..267ad30 100644
--- a/src/components/BpmnDesign/panel/TaskPanel.vue
+++ b/src/components/BpmnDesign/panel/TaskPanel.vue
@@ -65,7 +65,7 @@
                   </el-select>
                 </el-form-item>
                 <el-form-item v-if="formData.allocationType === AllocationTypeEnum.USER" label="分配人员">
-                  <el-input v-model="assignee.userName">
+                  <el-input v-model="formData.fixedAssignee" @change="fixedAssigneeChange">
                     <template #append>
                       <el-button icon="Search" size="small" type="primary" @click="proxy.$modal.msgWarning('开发中。。。。。。')" />
                     </template>
@@ -354,6 +354,9 @@ const skipExpressionChange = (newVal) => {
 const priorityChange = (newVal) => {
   updateProperties({ 'flowable:priority': newVal });
 };
+const fixedAssigneeChange = (newVal) => {
+  updateProperties({ 'flowable:assignee': newVal && newVal.length > 0 ? newVal : undefined });
+};
 const multiInstanceTypeChange = (newVal) => {
   if (newVal !== MultiInstanceTypeEnum.NONE) {
     let loopCharacteristics = props.element.businessObject.get('loopCharacteristics');
@@ -432,6 +435,10 @@ onBeforeMount(() => {
     formData.value.completionCondition = loopCharacteristics.completionCondition?.body || '';
     formData.value.multiInstanceType = loopCharacteristics.isSequential ? MultiInstanceTypeEnum.SERIAL : MultiInstanceTypeEnum.PARALLEL;
   }
+
+  if (formData.value.assignee) {
+    formData.value.fixedAssignee = formData.value.assignee;
+  }
 });
 
 const formRules = ref<ElFormRules>({
diff --git a/src/types/bpmn/panel.d.ts b/src/types/bpmn/panel.d.ts
index baadd6a..0d0cac4 100644
--- a/src/types/bpmn/panel.d.ts
+++ b/src/types/bpmn/panel.d.ts
@@ -43,6 +43,7 @@ declare module 'bpmnDesign' {
     exclude?: boolean;
     class?: string;
     dueDate?: string;
+    fixedAssignee?: string;
 
     candidateUsers?: string;
     assignee?: string;