diff --git a/src/bpmn/panel/TaskPanel.vue b/src/bpmn/panel/TaskPanel.vue
index a42de8ab..3a6561f0 100644
--- a/src/bpmn/panel/TaskPanel.vue
+++ b/src/bpmn/panel/TaskPanel.vue
@@ -160,7 +160,7 @@
                     </el-tooltip>
                   </span>
                 </template>
-                <el-input v-model="formData.elementVariable" @change="elementVariableChange"> </el-input>
+                <el-input v-model="formData.elementVariable" @input="elementVariableChange"> </el-input>
               </el-form-item>
               <el-form-item label="完成条件">
                 <template #label>
@@ -402,6 +402,10 @@ const elementVariableChange = (newVal) => {
   }
   loopCharacteristics.elementVariable = newVal && newVal.length > 0 ? newVal : undefined;
   updateProperties({ loopCharacteristics: loopCharacteristics });
+
+  // 动态输入分配人员
+  formData.value.assignee = `\$\{${newVal}\}`;
+  blurAssignee(formData.value.assignee);
 };
 const completionConditionChange = (newVal) => {
   let loopCharacteristics = props.element.businessObject.get<ModdleElement>('loopCharacteristics');