diff --git a/src/components/date-picker/picker.vue b/src/components/date-picker/picker.vue
index 734578a..f879b1f 100644
--- a/src/components/date-picker/picker.vue
+++ b/src/components/date-picker/picker.vue
@@ -178,7 +178,7 @@
             };
         },
         computed: {
-            publicValue(){
+            publicVModelValue(){
                 if (this.multiple){
                     return this.internalValue.slice();
                 } else {
@@ -189,6 +189,11 @@
                     return (isRange || this.multiple) ? val : val[0];
                 }
             },
+            publicStringValue(){
+                const {formatDate, publicVModelValue, type} = this;
+                if (type.match(/^time/)) return publicVModelValue;
+                return Array.isArray(publicVModelValue) ? publicVModelValue.map(formatDate) : formatDate(publicVModelValue);
+            },
             opened () {
                 return this.open === null ? this.visible : this.open;
             },
@@ -296,8 +301,8 @@
             },
             emitChange () {
                 this.$nextTick(() => {
-                    this.$emit('on-change', this.publicValue);
-                    this.dispatch('FormItem', 'on-form-change', this.publicValue);
+                    this.$emit('on-change', this.publicStringValue);
+                    this.dispatch('FormItem', 'on-form-change', this.publicStringValue);
                 });
             },
             parseDate(val) {
@@ -388,7 +393,7 @@
             type(type){
                 this.onSelectionModeChange(type);
             },
-            publicValue(now, before){
+            publicVModelValue(now, before){
                 const newValue = JSON.stringify(now);
                 const oldValue = JSON.stringify(before);
                 const shouldEmitInput = newValue !== oldValue || typeof now !== typeof before;
@@ -397,9 +402,9 @@
         },
         mounted () {
             const initialValue = this.value;
-            const parsedValue = this.publicValue;
+            const parsedValue = this.publicVModelValue;
             if (typeof initialValue !== typeof parsedValue || JSON.stringify(initialValue) !== JSON.stringify(parsedValue)){
-                this.$emit('input', this.publicValue); // to update v-model
+                this.$emit('input', this.publicVModelValue); // to update v-model
             }
             if (this.open !== null) this.visible = this.open;
         }
diff --git a/test/unit/specs/date-picker.spec.js b/test/unit/specs/date-picker.spec.js
index f152138..e2583ae 100644
--- a/test/unit/specs/date-picker.spec.js
+++ b/test/unit/specs/date-picker.spec.js
@@ -80,12 +80,13 @@ describe('DatePicker.vue', () => {
 
       vm.$nextTick(() => {
         // DATE
-        expect(dateValue instanceof Date).to.equal(true);
-        expect(dateToString(dateValue)).to.equal(nowDate);
+        expect(typeof dateValue).to.equal('string');
+        expect(dateValue).to.equal(nowDate);
         // DATERANGE
         expect(Array.isArray(dateRangeValue)).to.equal(true);
-        expect(dateToString(dateRangeValue[0])).to.equal(nowDate);
-        expect(dateToString(dateRangeValue[1])).to.equal(dateToString(nextWeek));
+        expect(dateRangeValue[0]).to.equal(nowDate);
+        expect(dateRangeValue[1]).to.equal(dateToString(nextWeek));
+
         // TIME
         expect(typeof timeValue).to.equal('string');
         expect(timeValue).to.equal(nowTime);
@@ -339,7 +340,7 @@ describe('DatePicker.vue', () => {
       expect(value2[1] instanceof Date).to.equal(true);
       expect(value2.map(dateToString).join('|')).to.equal([new Date(), new Date()].map(dateToString).join('|'));
 
-      expect(dateToString(vm.value3)).to.equal('2017-10-10');
+      expect(dateToString(value3)).to.equal('2017-10-10');
 
       expect(value4[0] instanceof Date).to.equal(true);
       expect(value4[1] instanceof Date).to.equal(true);
--
libgit2 0.21.4