diff --git a/build.dev.js b/build.dev.js
index cc4dcb6..2d9f06b 100644
--- a/build.dev.js
+++ b/build.dev.js
@@ -87,12 +87,22 @@ function mkWCFile({ style, html, js }) {
       /import ([\w]*) from '([a-z0-9\/\.\-_]*)'/g,
       'import $1 from "$2.js"'
     )
+    .replace(/constructor\([^)]?\)\s+\{/, 'constructor() {\n super()')
     .replace(
       '/* render */',
       `
-      super()
-      this.root = this.attachShadow({ mode: 'open' })
-      this.props = ${props}
+      Object.defineProperty(this, 'root', {
+        value: this.attachShadow({ mode: 'open' }),
+        writable: true,
+        enumerable: false,
+        configurable: true
+      })
+      Object.defineProperty(this, 'props', {
+        value: ${props},
+        writable: true,
+        enumerable: false,
+        configurable: true
+      })
 
       this.root.innerHTML = \`<style>${style}</style>${html}\`
       `
diff --git a/build.prod.js b/build.prod.js
index ce63312..20e783d 100644
--- a/build.prod.js
+++ b/build.prod.js
@@ -100,8 +100,19 @@ function mkWCFile({ style, html, js }) {
       '/* render */',
       `
       super()
-      this.root = this.attachShadow({ mode: 'open' })
-      this.props = ${props}
+      
+      Object.defineProperty(this, 'root', {
+        value: this.attachShadow({ mode: 'open' }),
+        writable: true,
+        enumerable: false,
+        configurable: true
+      })
+      Object.defineProperty(this, 'props', {
+        value: ${props},
+        writable: true,
+        enumerable: false,
+        configurable: true
+      })
 
       this.root.innerHTML = \`<style>${style}</style>${html}\`
       `
diff --git a/src/form/input.wc b/src/form/input.wc
index 9cddc68..e6af4ad 100644
--- a/src/form/input.wc
+++ b/src/form/input.wc
@@ -1,8 +1,8 @@
 <template>
   <label>
-    <slot name="left"></slot>
-    <input />
-    <wc-icon></wc-icon>
+    <slot class="prepend" name="prepend"></slot>
+    ${input}
+    <wc-icon class="icon"></wc-icon>
     <slot class="append" name="append"></slot>
   </label>
 </template>
@@ -12,23 +12,26 @@
   display: inline-block;
   user-select: none;
   color: nth($cd, 2);
+  border-radius: 4px;
 }
 
 label {
+  position: relative;
   display: flex;
   justify-content: center;
   align-items: center;
-  min-width: 32px;
+  min-width: 64px;
   height: 32px;
   font-size: 14px;
   border: 1px solid nth($cp, 3);
-  border-radius: 4px;
+  border-radius: inherit;
   background: #fff;
   color: inherit;
-  cursor: inherit;
+  cursor: text;
 
   input,
   textarea {
+    width: 100%;
     padding: 0 5px;
     border: 0;
     border-radius: inherit;
@@ -37,15 +40,60 @@ label {
     background: none;
     outline: none;
     box-shadow: none;
+    cursor: inherit;
   }
+  textarea {
+    height: 100%;
+    padding: 5px;
+    resize: none;
+  }
+  .prepend,
   .append {
-    display: inherit;
+    display: none;
+    justify-content: center;
+    align-items: center;
     width: auto;
     height: 30px;
-    padding: 0 18px;
+    padding: 0 10px;
+    background: nth($cp, 1);
+  }
+  .prepend {
+    border-right: 1px solid nth($cp, 3);
+    border-radius: 4px 0 0 4px;
+  }
+  .append {
     border-left: 1px solid nth($cp, 3);
     border-radius: 0 4px 4px 0;
-    background: nth($cp, 1);
+  }
+  &[prepend] .prepend {
+    display: flex;
+  }
+  &[append] .append {
+    display: flex;
+  }
+  /* ----- */
+  .icon {
+    padding: 0 5px;
+    --size: 20px;
+  }
+}
+/* --- */
+:host([disabled]) label {
+  background: nth($cp, 1);
+  cursor: not-allowed;
+  opacity: 0.6;
+}
+:host(:focus-within) {
+  box-shadow: 0 0 3px nth($ct, 1);
+}
+
+:host([type='textarea']) {
+  display: flex;
+  height: 80px;
+  label {
+    overflow: auto;
+    width: 100%;
+    height: 100%;
   }
 }
 </style>
@@ -53,18 +101,142 @@ label {
 <script>
 import '../icon/index'
 
+const TYPES = ['text', 'textarea', 'password']
+const INPUTS = {
+  text: '<input spellcheck="false">',
+  textarea: '<textarea spellcheck="false"></textarea>'
+}
+
 export default class Input {
   props = {
     value: '',
-    defaultValue: '',
-    placeholder: ''
+    icon: '',
+    type: 'text',
+    label: '',
+    placeholder: '',
+    autofocus: false,
+    disabled: false
   }
   constructor() {
+    var type = this.getAttribute('type')
+    var input = ''
+    if (type !== 'textarea') {
+      type = 'text'
+    }
+    input = INPUTS[type]
+
     /* render */
 
+    this.props.type = type
+
     this.__OUTER__ = this.root.children[1]
+    this.__PREPEND__ = this.__OUTER__.children[0]
     this.__INPUT__ = this.__OUTER__.children[1]
     this.__ICO__ = this.__OUTER__.children[2]
+    this.__APPEND__ = this.__OUTER__.children[3]
+  }
+
+  get disabled() {
+    return this.props.disabled
+  }
+
+  set disabled(val) {
+    var type = typeof val
+
+    if (val === this.props.disabled) {
+      return
+    }
+    if ((type === 'boolean' && val) || type !== 'boolean') {
+      this.props.disabled = true
+      this.setAttribute('disabled', '')
+      this.__INPUT__.setAttribute('disabled', '')
+    } else {
+      this.props.disabled = false
+      this.removeAttribute('disabled')
+      this.__INPUT__.removeAttribute('disabled')
+    }
+  }
+
+  get value() {
+    return this.__INPUT__.value
+  }
+
+  set value(val) {
+    this.props.value = val
+    this.__INPUT__.value = val
+  }
+
+  get type() {
+    return this.__INPUT__.type
+  }
+
+  set type(val) {
+    if (val !== 'textarea') {
+      this.__INPUT__.type = val
+    }
+  }
+
+  mounted() {
+    var prepend = this.__PREPEND__.assignedNodes()
+    var append = this.__APPEND__.assignedNodes()
+
+    // 相同插槽, 只允许1个
+    while (prepend.length > 1) {
+      this.removeChild(prepend.pop())
+    }
+    while (append.length > 1) {
+      this.removeChild(append.pop())
+    }
+
+    if (prepend.length && this.props.type !== 'textarea') {
+      this.__OUTER__.setAttribute('prepend', '')
+    }
+    if (append.length && this.props.type !== 'textarea') {
+      this.__OUTER__.setAttribute('append', '')
+    }
+  }
+
+  watch(name, old, val) {
+    if (old === val) {
+      return
+    }
+    switch (name) {
+      case 'icon':
+        this.props.icon = val
+        if (val) {
+          this.__ICO__.setAttribute('is', val)
+        } else {
+          this.removeAttribute('icon')
+          this.__ICO__.removeAttribute('is')
+        }
+        break
+
+      case 'autofocus':
+        setTimeout(_ => {
+          this.__INPUT__.focus()
+        }, 10)
+        break
+
+      // label和placeholder 功能相同
+      case 'label':
+      case 'placeholder':
+        this.__INPUT__.setAttribute('placeholder', val)
+        break
+
+      case 'type':
+        if (~TYPES.indexOf(val)) {
+          this.type = val
+        } else {
+          this.type = 'text'
+        }
+        break
+
+      case 'disabled':
+        if (val === '') {
+          this[name] = true
+        }
+        break
+    }
   }
 }
 </script>
diff --git a/src/icon/index.wc b/src/icon/index.wc
index a8b787f..c33b431 100644
--- a/src/icon/index.wc
+++ b/src/icon/index.wc
@@ -5,16 +5,14 @@
 <style lang="scss">
 :host {
   display: inline-block;
-  width: 32px;
-  height: 32px;
   color: nth($cd, 2);
 }
 :host(:not([is])) {
   display: none;
 }
 .icon {
-  width: inherit;
-  height: inherit;
+  width: var(--size, 32px);
+  height: var(--size, 32px);
   fill: currentColor;
   vertical-align: -0.1em;