diff --git a/Readme.md b/Readme.md
index f25cf86..133227a 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,6 +1,6 @@
 # @bd/ui
 
-百搭 UI 组件库, 基于 `web components` 开发。面向下一代的 UI 组件库
+百搭 UI 组件库, 基于 [【wkit】](https://github.com/bytedo/wkit) 开发。面向下一代的 UI`web components` 组件库
 
 ![downloads](https://img.shields.io/npm/dt/@bd/ui.svg)
 ![version](https://img.shields.io/npm/v/@bd/ui.svg)
diff --git a/src/form/checkbox.js b/src/form/checkbox.js
index 5d25e62..7dec373 100644
--- a/src/form/checkbox.js
+++ b/src/form/checkbox.js
@@ -12,7 +12,6 @@ class Checkbox extends Component {
     value: {
       type: Array,
       default: [],
-      attribute: false,
       observer() {
         this.#updateChildrenStat()
       }
diff --git a/src/form/index.js b/src/form/index.js
index fd46019..77f2e3e 100644
--- a/src/form/index.js
+++ b/src/form/index.js
@@ -1,6 +1,5 @@
 import './button.js'
 import './checkbox.js'
-import './dropdown.js'
 import './input.js'
 import './link.js'
 import './number.js'
diff --git a/src/form/passwd.js b/src/form/passwd.js
index 6f4889c..c1abc7a 100644
--- a/src/form/passwd.js
+++ b/src/form/passwd.js
@@ -16,11 +16,6 @@ class Passwd extends Component {
       default: '',
       attribute: false
     },
-    _type: {
-      type: String,
-      default: 'password',
-      attribute: false
-    },
     autofocus: false,
     readonly: false,
     disabled: false,
@@ -189,6 +184,8 @@ class Passwd extends Component {
     `
   ]
 
+  #type = 'password'
+
   mounted() {
     if (this.autofocus) {
       nextTick(_ => this.$refs.input.focus())
@@ -199,7 +196,8 @@ class Passwd extends Component {
     if (this.readOnly || this.disabled) {
       return
     }
-    this._type = this._type === 'password' ? '' : 'password'
+    this.#type = this.#type === 'password' ? '' : 'password'
+    this.$requestUpdate()
   }
 
   handleInput(ev) {
@@ -221,13 +219,13 @@ class Passwd extends Component {
           @change=${this.handleChange}
           :readOnly=${this.readOnly}
           :disabled=${this.disabled}
-          :type=${this._type}
+          :type=${this.#type}
           :value=${this.value}
         />
         <wc-icon
           class="icon"
           @click=${this.iconClick}
-          :name=${this._type === 'password' ? 'eye' : 'eye-off'}
+          :name=${this.#type === 'password' ? 'eye' : 'eye-off'}
         ></wc-icon>
       </div>
     `
diff --git a/src/form/select.js b/src/form/select.js
index f24d926..56694f7 100644
--- a/src/form/select.js
+++ b/src/form/select.js
@@ -8,6 +8,8 @@ import { nextTick, css, html, Component } from 'wkit'
 import '../icon/index.js'
 import '../form/input.js'
 import '../scroll/index.js'
+import '../option/index.js'
+
 class Select extends Component {
   static props = {
     value: {
@@ -88,26 +90,4 @@ class Select extends Component {
   }
 }
 
-class Option extends Component {
-  static props = {
-    value: '2'
-  }
-
-  static styles = [css``]
-
-  mounted() {
-    // console.log(this.value)
-    // console.log(this.$refs)
-    // console.log(this.root.innerHTML)
-    console.log('option mounted')
-  }
-  onclick() {
-    console.log(11)
-  }
-  render() {
-    return html` <div ref="li">${this.value}</div> `
-  }
-}
-
 Select.reg('select')
-Option.reg('option')