diff --git a/src/form/button.js b/src/form/button.js
index 1d07f64..89d5a22 100644
--- a/src/form/button.js
+++ b/src/form/button.js
@@ -23,7 +23,7 @@ class Button extends Component {
       }
     },
     disabled: false,
-    lazy: 'num!0' // 并发拦截时间, 单位毫秒
+    lazy: 'num!1000' // 并发拦截时间, 单位毫秒
   }
 
   static styles = [
@@ -252,9 +252,10 @@ class Button extends Component {
   ]
 
   #cacheIcon
+  #stamp = 0
 
   created() {
-    this.stamp = 0
+    this.#stamp = 0
 
     this._clickFn = this.$on(
       'click',
@@ -266,10 +267,10 @@ class Button extends Component {
           return ev.stopPropagation()
         }
         // 并发拦截
-        if (lazy > 0 && now - this.stamp < lazy) {
+        if (lazy > 0 && now - this.#stamp < lazy) {
           return ev.stopPropagation()
         }
-        this.stamp = now
+        this.#stamp = now
       },
       true
     )
diff --git a/src/form/number.js b/src/form/number.js
index 7321389..1561fb4 100644
--- a/src/form/number.js
+++ b/src/form/number.js
@@ -4,77 +4,84 @@
  * @date 2023/03/06 15:17:25
  */
 
-import { css, html, Component, nextTick } from 'wkit'
+import { css, html, Component } from 'wkit'
 
-class WcNumber extends Component {
+const MAX_VALUE = 1e9 - 1
+const MIN_VALUE = -MAX_VALUE
+
+class InputNumber extends Component {
   static props = {
-    type: 'primary',
-    size: 'l',
-    max: { type: Number, default: null },
-    min: { type: Number, default: null },
-    step: 1,
+    max: `num!${MAX_VALUE}`,
+    min: `num!${MIN_VALUE}`,
+    step: 'num!1',
     value: {
       type: Number,
       default: 0,
-      attribute: false
+      observer(v) {
+        this.value = this.#fix(v)
+      }
     },
     readonly: false,
     autofocus: false,
     disabled: false,
-    lazy: 1000 // 并发拦截时间, 单位毫秒
+    lazy: 'num!1000' // 并发拦截时间, 单位毫秒
   }
 
   static styles = [
     // 基础样式
     css`
       :host {
-        overflow: hidden;
         display: inline-flex;
         min-width: 128px;
-        height: 36px;
-        user-select: none;
-        -moz-user-select: none;
+        height: 32px;
         color: var(--color-dark-1);
         border-radius: 3px;
+        font-size: 14px;
         cursor: text;
         transition: box-shadow 0.15s linear;
+        -webkit-user-select: none;
+        user-select: none;
       }
 
       :host(:focus-within) {
         box-shadow: 0 0 0 2px var(--color-plain-a);
       }
-      .label {
+
+      .container {
         display: flex;
         width: 100%;
         height: 100%;
         margin: 0 auto;
         line-height: 1;
-        font-size: 14px;
         border: 1px solid var(--color-grey-2);
         border-radius: inherit;
-        background: var(--bg-color, #fff);
+        background: #fff;
         color: inherit;
         cursor: text;
 
-        span {
+        button {
           display: flex;
           justify-content: center;
           align-items: center;
           width: 34px;
           height: 100%;
+          border: 0;
           font-size: 18px;
+          font-family: Tahoma, Verdana, Helvetica, Arial, sans-serif;
+          background: var(--color-plain-1);
+          color: inherit;
           cursor: pointer;
 
           &:first-child {
-            border-radius: 3px 0 0 3px;
-            border-right: 1px solid var(--color-grey-a);
+            border-radius: 2px 0 0 2px;
+            border-right: 1px solid var(--color-grey-1);
           }
           &:last-child {
-            border-radius: 0 3px 3px 0;
-            border-left: 1px solid var(--color-grey-a);
+            border-radius: 0 2px 2px 0;
+            border-left: 1px solid var(--color-grey-1);
           }
 
-          &.disabled {
+          &[disabled] {
             cursor: not-allowed;
             opacity: 0.6;
           }
@@ -87,18 +94,12 @@ class WcNumber extends Component {
           height: 100%;
           padding: 0 6px;
           border: 0;
-          border-radius: inherit;
           color: inherit;
-          font: inherit;
+          font-size: inherit;
           text-align: center;
           background: none;
           outline: none;
-          box-shadow: none;
           cursor: inherit;
-
-          &::placeholder {
-            color: var(--color-grey-1);
-          }
         }
         /* ----- */
       }
@@ -117,11 +118,6 @@ class WcNumber extends Component {
           h: 24px,
           f: 12px
         ),
-        l: (
-          w: 108px,
-          h: 32px,
-          f: 14px
-        ),
         xl: (
           w: 132px,
           h: 36px,
@@ -130,7 +126,7 @@ class WcNumber extends Component {
         xxl: (
           w: 160px,
           h: 44px,
-          f: 14px
+          f: 16px
         )
       );
 
@@ -140,18 +136,21 @@ class WcNumber extends Component {
           height: map.get($v, 'h');
           font-size: map.get($v, 'f');
 
-          .icon {
-            --wc-icon-size: #{map.get($v, 'f')};
+          button {
+            width: map.get($v, 'h') + 2;
           }
         }
-        :host([size='#{$s}'][circle]) {
-          width: map.get($v, 'h');
-          height: map.get($v, 'h');
-        }
       }
 
       :host([round]) {
-        border-radius: 99rem;
+        border-radius: 22px;
+
+        button:first-child {
+          border-radius: 22px 0 0 22px;
+        }
+        button:last-child {
+          border-radius: 0 22px 22px 0;
+        }
       }
     `,
     // 配色
@@ -173,7 +172,7 @@ class WcNumber extends Component {
         :host([type='#{$t}']) span {
           border-color: var(--color-#{$c}-a);
         }
-        :host([type='#{$t}']) .label {
+        :host([type='#{$t}']) .container {
           border-color: var(--color-#{$c}-2);
         }
       }
@@ -185,14 +184,14 @@ class WcNumber extends Component {
         opacity: 0.6;
       }
       /* --- */
-      :host([readonly]) .label {
+      :host([readonly]) .container {
         cursor: default;
         opacity: 0.8;
         span {
           cursor: inherit;
         }
       }
-      :host([disabled]) .label {
+      :host([disabled]) .container {
         background: var(--color-plain-1);
         cursor: not-allowed;
         opacity: 0.6;
@@ -203,54 +202,66 @@ class WcNumber extends Component {
     `
   ]
 
-  created() {
-    this.stamp = 0
-  }
+  #stamp = 0
 
   mounted() {
     if (this.autofocus) {
       // 需要focus()才能聚焦成功
-      nextTick(_ => this.$refs.input.focus())
+      this.$refs.input.focus()
     }
-    this.value = this.clapm(this.value)
+    this.value = this.#fix(this.$refs.input.value)
     this.$refs.input.value = this.value
   }
 
-  onClick(e) {
-    if (e.target.classList.contains('disabled')) {
-      return
-    }
-    const { disabled, readOnly } = this
+  #click(ev) {
+    let { disabled, readOnly } = this
+    let { act } = ev.target.dataset
+
     if (disabled || readOnly) {
       return
     }
-    const { act } = e.target.dataset
-    this.updateValue(act)
+
+    this.#updateValue(act)
   }
-  updateValue(act) {
-    const { max, min, step, value } = this
-    if (act === '+') {
-      if (max === null || value + step <= max) {
-        this.value += step
-      } else {
-        this.value = max
-      }
-    } else {
-      if (min === null || value - step >= min) {
-        this.value -= step
-      } else {
-        this.value = min
-      }
-    }
+
+  #fetch(value) {
+    this.value = value
     this.$emit('input')
+    this.$emit('change')
   }
-  onChange(e) {
-    this.value = this.clapm(e.target.value)
+
+  #updateValue(act) {
+    let { max, min, step, value } = this
+    if (act === '+') {
+      if (value >= max) {
+        return
+      }
+      value += step
+    } else {
+      if (value <= min) {
+        return
+      }
+      value -= step
+    }
+    this.#fetch(value)
     this.$refs.input.value = this.value
   }
-  onKeydown(ev) {
-    const now = Date.now()
-    const { lazy, disabled, readOnly } = this
+
+  #changed(ev) {
+    let _value = +ev.target.value
+    let value = this.#fix(_value)
+
+    if (value !== _value) {
+      ev.target.value = value
+    }
+    if (this.value !== value) {
+      this.#fetch(value)
+    }
+  }
+
+  #keydown(ev) {
+    let now = Date.now()
+    let { lazy, disabled, readOnly } = this
 
     if (disabled || readOnly) {
       return
@@ -259,62 +270,58 @@ class WcNumber extends Component {
     // up: 38, down: 40
     if (ev.keyCode === 38 || ev.keyCode === 40) {
       ev.preventDefault()
-      return this.updateValue(ev.keyCode === 38 ? '+' : '-')
+      return this.#updateValue(ev.keyCode === 38 ? '+' : '-')
     }
     // 回车触发submit事件
     if (ev.keyCode === 13) {
       ev.preventDefault()
 
       // 并发拦截
-      if (lazy && now - this.stamp < lazy) {
+      if (lazy && now - this.#stamp < lazy) {
         return
       }
 
-      this.stamp = now
-      this.value = this.clapm(ev.target.value)
+      this.#stamp = now
+      this.value = this.#fix(ev.target.value)
       this.$refs.input.value = this.value
       this.$emit('submit', { value: this.value })
     }
   }
 
-  clapm(val) {
-    const max = this.max ?? Number.MAX_SAFE_INTEGER
-    const min = this.min ?? Number.MIN_SAFE_INTEGER
+  #fix(val) {
+    let { max, min } = this
     return Math.min(max, Math.max(+val, min))
   }
+
   render() {
     return html`
-      <div class="label">
-        <span
+      <main class="container">
+        <button
           data-act="-"
-          class=${this.min && this.value - this.step < this.min
-            ? 'disabled'
-            : ''}
-          @click=${this.onClick}
-          >-</span
+          :disabled=${this.value <= this.min}
+          @click=${this.#click}
         >
+          -
+        </button>
         <input
           ref="input"
-          value="0"
-          maxlength="9"
+          maxlength="10"
           disabled=${this.disabled}
-          readonly=${this.readOnly}
-          autofocus=${this.autofocus}
-          :value=${this.value}
-          @change=${this.onChange}
-          @keydown=${this.onKeydown}
+          :readOnly=${this.readOnly}
+          value=${this.value}
+          @change=${this.#changed}
+          @keydown=${this.#keydown}
         />
-        <span
+        <button
           data-act="+"
-          class=${this.max && this.value + this.step > this.max
-            ? 'disabled'
-            : ''}
-          @click=${this.onClick}
-          >+</span
+          :disabled=${this.value >= this.max}
+          @click=${this.#click}
         >
-      </div>
+          +
+        </button>
+      </main>
     `
   }
 }
 
-WcNumber.reg('number')
+InputNumber.reg('number')