diff --git a/packages/date-picker/src/picker.vue b/packages/date-picker/src/picker.vue
index fa410a0533..772a9adf03 100644
--- a/packages/date-picker/src/picker.vue
+++ b/packages/date-picker/src/picker.vue
@@ -409,7 +409,9 @@ export default {
       showClose: false,
       userInput: null,
       valueOnOpen: null, // value when picker opens, used to determine whether to emit change
-      unwatchPickerOptions: null
+      unwatchPickerOptions: null,
+      unwatchPickerMin: null,
+      unwatchPickerMax: null
     };
   },
 
@@ -846,12 +848,12 @@ export default {
       this.picker.toggleAmPm = this.toggleAmPm || false;
 
       this.picker.minimum = this.minimum || null;
-      this.$watch('minimum', (minimum) => {
+      this.unwatchPickerMin = this.$watch('minimum', (minimum) => {
         this.picker.minimum = minimum || null;
       });
 
       this.picker.maximum = this.maximum || null;
-      this.$watch('maximum', (maximum) => {
+      this.unwatchPickerMax = this.$watch('maximum', (maximum) => {
         this.picker.maximum = maximum || null;
       });
 
@@ -916,6 +918,14 @@ export default {
         if (typeof this.unwatchPickerOptions === 'function') {
           this.unwatchPickerOptions();
         }
+        if (typeof this.unwatchPickerMin === 'function') {
+          this.unwatchPickerMin();
+          this.unwatchPickerMin = null;
+        }
+        if (typeof this.unwatchPickerMax === 'function') {
+          this.unwatchPickerMax();
+          this.unwatchPickerMax = null;
+        }
         this.picker.$el.parentNode.removeChild(this.picker.$el);
       }
     },