diff --git a/src/form/input.wc b/src/form/input.wc
index 4481b97..b77f2a3 100644
--- a/src/form/input.wc
+++ b/src/form/input.wc
@@ -472,7 +472,7 @@ export default class Input {
 
     // 键盘事件
     this._handleSubmit = $.catch(this.__INPUT__, 'keydown', ev => {
-      let { passwd, minlength } = this.props
+      let { passwd, minlength, lazy } = this.props
       let val = this.value
       let now = Date.now()
 
diff --git a/src/form/number.wc b/src/form/number.wc
index b86409a..2c130c3 100644
--- a/src/form/number.wc
+++ b/src/form/number.wc
@@ -218,7 +218,8 @@ export default class Number {
     step: 1,
     autofocus: false,
     readonly: false,
-    disabled: false
+    disabled: false,
+    lazy: 0
   }
 
   __init__() {
@@ -330,8 +331,13 @@ export default class Number {
   }
 
   mounted() {
+    this.stamp = 0
+
     // 键盘事件
     this._handleSubmit = $.catch(this.__INPUT__, 'keydown', ev => {
+      let now = Date.now()
+      let { lazy } = this.props
+
       if (this.disabled || this.readOnly) {
         return
       }
@@ -344,6 +350,14 @@ export default class Number {
       // 回车触发submit事件
       if (ev.keyCode === 13) {
         ev.preventDefault()
+
+        // 并发拦截
+        if (lazy && now - this.stamp < lazy) {
+          return
+        }
+
+        this.stamp = now
+
         this.dispatchEvent(
           new CustomEvent('submit', {
             detail: this.value
@@ -400,6 +414,10 @@ export default class Number {
         this._checkActionEnable()
         break
 
+      case 'lazy':
+        this.props.lazy = val >> 0
+        break
+
       case 'readonly':
       case 'disabled':
         var k = name