diff --git a/package/component/src/component/datePicker/index.vue b/package/component/src/component/datePicker/index.vue
index 6d243cf9..06033d09 100644
--- a/package/component/src/component/datePicker/index.vue
+++ b/package/component/src/component/datePicker/index.vue
@@ -232,7 +232,13 @@ watch(
 );
 
 onMounted(() => {
-  currentDay.value = new Date(props.modelValue).getTime();
+  currentDay.value = props.modelValue ? new Date(props.modelValue).getTime() : -1;
+  if (currentDay.value == -1) {
+    setTimeout(() => {
+      now();
+      clear();
+    }, 0);
+  }
   hms.value.hh = dayjs(props.modelValue).hour();
   hms.value.mm = dayjs(props.modelValue).minute();
   hms.value.ss = dayjs(props.modelValue).second();
diff --git a/package/document-component/src/document/zh-CN/components/datePicker.md b/package/document-component/src/document/zh-CN/components/datePicker.md
index 3855c091..4b47c993 100644
--- a/package/document-component/src/document/zh-CN/components/datePicker.md
+++ b/package/document-component/src/document/zh-CN/components/datePicker.md
@@ -14,7 +14,7 @@
 ::: demo
 
 <template>
-  <lay-date-picker v-model="endTime"></lay-date-picker>
+  <lay-date-picker v-model="endTime" placeholder="click me"></lay-date-picker>
 </template>
 
 <script>
@@ -23,7 +23,7 @@ import { ref } from 'vue'
 export default {
   setup() {
 
-   const endTime = ref("2022-03-14 17:35:00");
+   const endTime = ref("");
 
     return {
       endTime
diff --git a/package/document-component/src/document/zh-CN/guide/changelog.md b/package/document-component/src/document/zh-CN/guide/changelog.md
index 8371ae11..8f7d8cea 100644
--- a/package/document-component/src/document/zh-CN/guide/changelog.md
+++ b/package/document-component/src/document/zh-CN/guide/changelog.md
@@ -18,6 +18,7 @@
         <ul>         
           <li><span style="color:#FF5722">[破坏性更新]</span> 统一checkbox与radio属性语义 两个组件受到影响 label代表显示值，value代表绑定值。 by @SmallWai</li> 
           <li>[修复] page 组件 外部更改v-model视图不刷新问题。 by @SmallWai</li> 
+          <li>[修复] datePicker 组件 初始值为空时无法点击Bug。 by @SmallWai</li> 
           <li>[修复] datePicker 组件 启用simple属性后无法弹出问题。 by @SmallWai</li> 
           <li>[修复] datePicker 组件 上一次更新带来的Bug。 by @SmallWai</li> 
           <li>[优化] radio 组件 动画效果。 by @SmallWai</li>