diff --git a/src/components/SimpleKeyboard.vue b/src/components/SimpleKeyboard.vue
index 8268178..b9678f9 100644
--- a/src/components/SimpleKeyboard.vue
+++ b/src/components/SimpleKeyboard.vue
@@ -20,6 +20,7 @@ export default {
     maxLength: { default: '' }
   },
   data: () => ({
+    copy: true,
     keyboard: null,
     displayDefault: {
       '{bksp}': 'backspace',
@@ -99,7 +100,13 @@ export default {
   },
   methods: {
     onChange (input) {
-      this.$emit('onChange', input)
+      if (this.copy) {
+        this.$emit('onChange', this.input + input)
+        this.copy = !this.copy
+        return false
+      } else {
+        this.$emit('onChange', input)
+      }
     },
     onKeyPress (button, $event) {
       // 点击关闭