diff --git a/src/core/view/components/picker-view/index.vue b/src/core/view/components/picker-view/index.vue
index 4a99d7d208690179ee55e6d99397f1d18d7a59a6..1913702560c4328ec2cf8668125c34a8ac5b7c5b 100644
--- a/src/core/view/components/picker-view/index.vue
+++ b/src/core/view/components/picker-view/index.vue
@@ -38,14 +38,12 @@ export default {
   },
   watch: {
     value (val) {
+      this.valueSync.length = val.length
       val.forEach((val, index) => {
         if (val !== this.valueSync[index]) {
           this.$set(this.valueSync, index, val)
         }
       })
-      if (val.length > this.valueSync.length) {
-        this.valueSync.splice(this.valueSync.length - 1, this.valueSync.length - val.length)
-      }
     },
     valueSync: {
       deep: true,
diff --git a/src/core/view/components/picker/index.vue b/src/core/view/components/picker/index.vue
index e779afb550cdf6363e75f8b201892ef0bf949ba5..37f665a0cdc5a2701d5990561dda051e9300fac6 100644
--- a/src/core/view/components/picker/index.vue
+++ b/src/core/view/components/picker/index.vue
@@ -122,14 +122,12 @@ export default {
         if (!Array.isArray(this.valueSync)) {
           this.valueSync = []
         }
+        this.valueSync.length = val.length
         val.forEach((val, index) => {
           if (val !== this.valueSync[index]) {
             this.$set(this.valueSync, index, val)
           }
         })
-        if (val.length !== this.valueSync.length) {
-          this.valueSync.splice(val.length, val.length - this.valueSync.length)
-        }
       } else if (typeof val !== 'object') {
         this.valueSync = val
       }