diff --git a/demo/documentation/components/datePicker/enUS/events.md b/demo/documentation/components/datePicker/enUS/events.md
new file mode 100644
index 000000000..fd9ab25da
--- /dev/null
+++ b/demo/documentation/components/datePicker/enUS/events.md
@@ -0,0 +1,76 @@
+# Events
+```html
+<n-date-picker
+  v-model="datetime"
+  type="datetime"
+  :disabled="disabled"
+  @blur="onBlur1"
+  @change="onChange1"
+/>
+<n-date-picker
+  v-model="date"
+  type="date"
+  :disabled="disabled"
+  @blur="onBlur2"
+  @change="onChange2"
+/>
+<n-date-picker
+  v-model="datetimerange"
+  :disabled="disabled"
+  type="datetimerange"
+  @blur="onBlur3"
+  @change="onChange3"
+/>
+<n-date-picker
+  v-model="daterange"
+  :disabled="disabled"
+  type="daterange"
+  @blur="onBlur4"
+  @change="onChange4"
+/>
+<n-switch v-model="disabled" />
+```
+```js
+export default {
+  data() {
+    return {
+      datetime: 891360258000,
+      date: null,
+      datetimerange: [324910284, 910391323],
+      daterange: [324910284, 910391323],
+      disabled: false
+    };
+  },
+  methods: {
+    onBlur1 (v) {
+      this.$NMessage.info('Blur1 ' + v)
+    },
+    onChange1 (v) {
+      this.$NMessage.info('Change1 ' + v)
+    },
+    onBlur2 (v) {
+      this.$NMessage.error('Blur2 ' + v)
+    },
+    onChange2 (v) {
+      this.$NMessage.error('Change2 ' + v)
+    },
+    onBlur3 (v) {
+      this.$NMessage.warning('Blur3 ' + v)
+    },
+    onChange3 (v) {
+      this.$NMessage.warning('Change3 ' + v)
+    },
+    onBlur4 (v) {
+      this.$NMessage.success('Blur4 ' + v)
+    },
+    onChange4 (v) {
+      this.$NMessage.success('Change4 ' + v)
+    }
+  }
+};
+```
+```css
+.n-date-picker {
+  margin: 0 12px 8px 0;
+}
+```
\ No newline at end of file
diff --git a/demo/documentation/components/datePicker/enUS/index.md b/demo/documentation/components/datePicker/enUS/index.md
index 4e42992da..3e268eb95 100644
--- a/demo/documentation/components/datePicker/enUS/index.md
+++ b/demo/documentation/components/datePicker/enUS/index.md
@@ -6,4 +6,5 @@ daterange
 datetimerange
 disabled
 actions
+events
 ```
\ No newline at end of file
diff --git a/packages/common/DatePicker/src/main.vue b/packages/common/DatePicker/src/main.vue
index 770d8814b..7a16dfc53 100644
--- a/packages/common/DatePicker/src/main.vue
+++ b/packages/common/DatePicker/src/main.vue
@@ -10,12 +10,15 @@
   >
     <n-input
       v-if="isRange"
+      ref="input"
+      :lazy-focus="true"
       :disabled="disabled"
       :value="[displayStartTime, displayEndTime]"
       :placeholder="[computedStartPlaceholder, computedEndPlaceholder]"
       :readonly="disabled ? 'disabled' : false"
-      :splitor="splitor"
-      split
+      :seperator="seperator"
+      :force-focus="active"
+      pair
       @click="handleActivatorClick"
       @focus="handleFocus"
       @blur="handleRangeInputBlur"
@@ -27,9 +30,12 @@
     </n-input>
     <n-input
       v-else
+      ref="input"
       v-model="displayTime"
       class="n-date-picker__input"
+      :force-focus="active"
       :disabled="disabled"
+      :lazy-focus="true"
       :placeholder="computedPlaceholder"
       :readonly="disabled ? 'disabled' : false"
       @click="handleActivatorClick"
@@ -60,6 +66,7 @@
           :active="active"
           :actions="actions"
           :theme="synthesizedTheme"
+          @blur="handlePanelBlur"
           @input="handlePanelInput"
           @close="closeCalendar"
         />
@@ -71,6 +78,7 @@
           :actions="actions"
           :theme="synthesizedTheme"
           @input="handlePanelInput"
+          @blur="handlePanelBlur"
           @close="closeCalendar"
         />
         <daterange-panel
@@ -81,6 +89,7 @@
           :actions="actions"
           :theme="synthesizedTheme"
           @input="handleRangePanelInput"
+          @blur="handlePanelBlur"
           @close="closeCalendar"
         />
         <datetimerange-panel
@@ -92,6 +101,7 @@
           :theme="synthesizedTheme"
           @input="handleRangePanelInput"
           @close="closeCalendar"
+          @blur="handlePanelBlur"
         />
       </div>
     </div>
@@ -190,7 +200,7 @@ export default {
       },
       default: 'date'
     },
-    splitor: {
+    seperator: {
       type: String,
       default: 'to'
     },
@@ -220,8 +230,7 @@ export default {
       displayTime: '',
       displayStartTime: '',
       displayEndTime: '',
-      active: false,
-      isFocus: false
+      active: false
     }
   },
   computed: {
@@ -261,15 +270,32 @@ export default {
      * If new value is valid, set calendarTime and refresh display strings.
      * If new value is invalid, do nothing.
      */
-    value (newValue) {
-      console.log(newValue)
+    value (newValue, oldValue) {
       this.refresh(newValue)
+      if (this.isRange) {
+        if (!(
+          Array.isArray(newValue) &&
+          Array.isArray(oldValue) &&
+          newValue.length === 2 &&
+          newValue.length === oldValue.length &&
+          newValue[0] === oldValue[0] &&
+          newValue[1] === oldValue[1]
+        )) {
+          this.$emit('change', newValue)
+        }
+      } else { this.$emit('change', newValue) }
     }
   },
   created () {
     this.refresh(this.value)
   },
   methods: {
+    /**
+     * this blur is not really blur event, its key tab out of panel
+     */
+    handlePanelBlur () {
+      this.closeCalendar(true)
+    },
     handleClickOutside (e) {
       if (this.active && !this.$refs.activator.contains(e.target)) {
         this.closeCalendar()
@@ -315,19 +341,26 @@ export default {
     /**
      * Blur
      */
-    handleTimeInputBlur () {
+    afterBlur (e) {
+      if (this.active) {
+        window.setTimeout(() => {
+          if (!(this.$refs.panel && this.$refs.panel.$el.contains(document.activeElement))) {
+            this.closeCalendar()
+          }
+        }, 0)
+      }
+    },
+    handleTimeInputBlur (e) {
       if (this.disabled) return
       const newSelectedDateTime = strictParse(this.displayTime, this.computedFormat, new Date())
-      console.log('handle blur', this.displayTime, this.computedFormat, new Date())
-      console.log('handle blur new time', typeof newSelectedDateTime)
       if (isValid(newSelectedDateTime)) {
         this.$emit('input', getTime(newSelectedDateTime))
       } else {
         this.refreshDisplayTime(this.value)
       }
-      this.isFocus = false
+      this.afterBlur(e)
     },
-    handleRangeInputBlur () {
+    handleRangeInputBlur (e) {
       if (this.disabled) return
       const startDateTime = strictParse(this.displayStartTime, this.computedFormat, new Date())
       const endDateTime = strictParse(this.displayEndTime, this.computedFormat, new Date())
@@ -336,28 +369,8 @@ export default {
       } else {
         this.changeStartEndTime(startDateTime, endDateTime)
       }
-      this.isFocus = false
+      this.afterBlur(e)
     },
-    // handleStartTimeInputBlur () {
-    //   if (this.disabled) return
-    //   const startMoment = strictParse(this.displayStartTime, this.computedFormat, null)
-    //   if (startMoment !== null) {
-    //     this.changeStartDateTime(startMoment)
-    //   } else {
-    //     this.refresh(this.value)
-    //   }
-    //   this.isFocus = false
-    // },
-    // handleEndTimeInputBlur () {
-    //   if (this.disabled) return
-    //   const endMoment = strictParse(this.displayStartTime, this.computedFormat, null)
-    //   if (endMoment !== null) {
-    //     this.changeStartDateTime(endMoment)
-    //   } else {
-    //     this.refresh(this.value)
-    //   }
-    //   this.isFocus = false
-    // },
     /**
      * Input
      */
@@ -386,13 +399,6 @@ export default {
       this.displayEndTime = endTime
       // console.log('handleRangeInput', v, newStartTime, newEndTime)
     },
-    // handleEndTimeInput (e) {
-    //   const v = e.target.value
-    //   const newEndTime = moment(v, this.computedFormat, true)
-    //   if (newEndTime.isValid()) {
-    //     this.changeEndDateTime(newEndTime)
-    //   }
-    // },
     /**
      * Click
      */
@@ -411,7 +417,7 @@ export default {
      */
     handleFocus () {
       if (this.disabled) return
-      this.isFocus = true
+      if (!this.active) this.openCalendar()
     },
     /**
      * Calendar
@@ -419,11 +425,18 @@ export default {
     openCalendar (e) {
       if (this.disabled || this.active) return
       this.active = true
-      // console.log('into open calendar')
       this.$nextTick().then(this.updatePosition)
     },
-    closeCalendar () {
-      this.active = false
+    closeCalendar (returnFocus = false) {
+      if (this.active) {
+        this.active = false
+        this.$emit('blur', this.value)
+        if (returnFocus) {
+          if (this.$refs.input && this.$refs.input.$el) {
+            this.$refs.input.$el.focus()
+          }
+        }
+      }
     },
     toggleCalendar () {
 
diff --git a/packages/common/DatePicker/src/panel/commonCalendarMixin.js b/packages/common/DatePicker/src/panel/commonCalendarMixin.js
index d2f9343c9..692329e89 100644
--- a/packages/common/DatePicker/src/panel/commonCalendarMixin.js
+++ b/packages/common/DatePicker/src/panel/commonCalendarMixin.js
@@ -1,4 +1,5 @@
 import clickoutside from '../../../../directives/clickoutside'
+import focusDetector from './focusDetector'
 
 const TIME_CONST = {
   weekdays: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
@@ -11,6 +12,9 @@ export default {
   directives: {
     clickoutside
   },
+  components: {
+    focusDetector
+  },
   data () {
     return {
       noTransition: false,
@@ -21,6 +25,9 @@ export default {
     clearValue () {
       this.$emit('input', null)
     },
+    handleBlur (e) {
+      this.$emit('blur', e)
+    },
     banTransitionOneTick () {
       if (this.active) {
         this.noTransition = true
diff --git a/packages/common/DatePicker/src/panel/date.vue b/packages/common/DatePicker/src/panel/date.vue
index 15278fa99..64366265f 100644
--- a/packages/common/DatePicker/src/panel/date.vue
+++ b/packages/common/DatePicker/src/panel/date.vue
@@ -3,6 +3,7 @@
     <div
       v-if="active"
       ref="self"
+      tabindex="0"
       class="n-date-picker-panel"
       :class="{
         [`n-${theme}-theme`]: theme
@@ -92,6 +93,7 @@
           Confirm
         </n-button>
       </div>
+      <focus-detector @focus="handleBlur" />
     </div>
   </transition>
 </template>
diff --git a/packages/common/DatePicker/src/panel/daterange.vue b/packages/common/DatePicker/src/panel/daterange.vue
index 2c9ec73b1..52fe92581 100644
--- a/packages/common/DatePicker/src/panel/daterange.vue
+++ b/packages/common/DatePicker/src/panel/daterange.vue
@@ -3,6 +3,7 @@
     <div
       v-if="active"
       ref="self"
+      tabindex="0"
       class="n-date-picker-panel n-date-picker-panel--daterange"
       :class="{
         [`n-${theme}-theme`]: theme
@@ -165,6 +166,7 @@
           Confirm
         </n-button>
       </div>
+      <focus-detector @focus="handleBlur" />
     </div>
   </transition>
 </template>
diff --git a/packages/common/DatePicker/src/panel/datetime.vue b/packages/common/DatePicker/src/panel/datetime.vue
index 336228121..1d24ff8ab 100644
--- a/packages/common/DatePicker/src/panel/datetime.vue
+++ b/packages/common/DatePicker/src/panel/datetime.vue
@@ -3,6 +3,7 @@
     <div
       v-if="active"
       ref="self"
+      tabindex="0"
       class="n-date-picker-panel"
       :class="{
         [`n-${theme}-theme`]: theme
@@ -109,6 +110,7 @@
           Confirm
         </n-button>
       </div>
+      <focus-detector @focus="handleBlur" />
     </div>
   </transition>
 </template>
diff --git a/packages/common/DatePicker/src/panel/datetimerange.vue b/packages/common/DatePicker/src/panel/datetimerange.vue
index 2d9c90014..7ec9d3549 100644
--- a/packages/common/DatePicker/src/panel/datetimerange.vue
+++ b/packages/common/DatePicker/src/panel/datetimerange.vue
@@ -3,6 +3,7 @@
     <div
       v-if="active"
       ref="self"
+      tabindex="0"
       class="n-date-picker-panel n-date-picker-panel--datetimerange"
       :class="{
         [`n-${theme}-theme`]: theme
@@ -224,6 +225,7 @@
         v-else
         style="height: 12px"
       />
+      <focus-detector @focus="handleBlur" />
     </div>
   </transition>
 </template>
diff --git a/packages/common/DatePicker/src/panel/focusDetector.vue b/packages/common/DatePicker/src/panel/focusDetector.vue
new file mode 100644
index 000000000..11bbabc9b
--- /dev/null
+++ b/packages/common/DatePicker/src/panel/focusDetector.vue
@@ -0,0 +1,21 @@
+<template>
+  <div
+    style="width: 0; height: 0;"
+    tabindex="0"
+    @focus="handleFocus"
+    @blur="handleBlur"
+  />
+</template>
+
+<script>
+export default {
+  methods: {
+    handleFocus () {
+      this.$emit('focus')
+    },
+    handleBlur () {
+      this.$emit('blur')
+    }
+  }
+}
+</script>
diff --git a/styles/DatePicker.scss b/styles/DatePicker.scss
index cfcacaf3d..4ccd93a11 100644
--- a/styles/DatePicker.scss
+++ b/styles/DatePicker.scss
@@ -14,6 +14,7 @@
   
   @include b(date-picker-panel) {
     @include once {
+      outline: none;
       @include fade-in-scale-up-transition(date-picker-panel);
       margin-top: 4px;
       margin-bottom: 4px;
@@ -165,7 +166,9 @@
           }
         }
         
-        
+        &:hover {
+          background-color: map-get($--date-picker-item-background-color, 'hover');
+        }
         @include not-m(in-display-month) {
           color: map-get($--date-picker-item-text-color, 'inactive');
         }
@@ -202,21 +205,18 @@
               }
             }
           }
-          @include m(selected) {
-            @include once {
-              border-radius: 3px;
-              width: 24px;
-              margin: 8px 11px;
-            }
-            color: map-get($--date-picker-item-text-color, 'active');
-            background-color: map-get($--date-picker-item-background-color, 'active');
-            &::after {
-              background-color: map-get($--date-picker-item-sup-color, 'active');
-            }
-          }
         }
-        &:hover {
-          background-color: map-get($--date-picker-item-background-color, 'hover');
+        @include m(selected) {
+          @include once {
+            border-radius: 3px;
+            width: 24px;
+            margin: 8px 11px;
+          }
+          color: map-get($--date-picker-item-text-color, 'active');
+          background-color: map-get($--date-picker-item-background-color, 'active');
+          &::after {
+            background-color: map-get($--date-picker-item-sup-color, 'active');
+          }
         }
       }
     }
diff --git a/styles/themes/dark/components/DatePicker.scss b/styles/themes/dark/components/DatePicker.scss
index 70e849dfa..20ea6f354 100644
--- a/styles/themes/dark/components/DatePicker.scss
+++ b/styles/themes/dark/components/DatePicker.scss
@@ -18,5 +18,5 @@
     'active': $--primary-6
   ) !global;
   $--date-picker-divider-color:  rgba(255, 255, 255, .08) !global;
-  $--date-picker-box-shadow: 0px 2px 8px 0px rgba(0,0,0,0.12) !global;
+  $--date-picker-box-shadow: 0px 2px 12px 0px rgba(0, 0, 0, 0.18) !global;
 }
\ No newline at end of file
diff --git a/styles/themes/light/components/DatePicker.scss b/styles/themes/light/components/DatePicker.scss
index a0e18afda..31c2edefe 100644
--- a/styles/themes/light/components/DatePicker.scss
+++ b/styles/themes/light/components/DatePicker.scss
@@ -18,5 +18,5 @@
     'active': $--primary-6
   ) !global;
   $--date-picker-divider-color: $--n-divider-color !global;
-  $--date-picker-box-shadow: 0px 2px 8px 0px rgba(0,0,0,0.12) !global;
+  $--date-picker-box-shadow: 0px 2px 12px 0px rgba(0, 0, 0, 0.18) !global;
 }
\ No newline at end of file