diff --git a/dist/search/index.js b/dist/search/index.js
new file mode 100644
index 00000000..0a51765a
--- /dev/null
+++ b/dist/search/index.js
@@ -0,0 +1,69 @@
+'use strict';
+
+Component({
+  externalClasses: ['search-class', 'input-class', 'cancel-class'],
+  properties: {
+    cancelText: {
+      type: String,
+      value: '取消'
+    },
+    disabled: {
+      type: Boolean,
+      value: false
+    },
+    focus: {
+      type: Boolean,
+      value: false
+    },
+    keyword: {
+      type: String,
+      value: ''
+    },
+    show: {
+      type: Array,
+      value: ['icon', 'cancel']
+    },
+    placeholder: {
+      type: String,
+      value: '请输入查询关键字',
+      observer: function observer(newVal) {
+        this.setData({
+          inputWidth: newVal.length * 14 + 45 + 'px'
+        });
+      }
+    },
+    useCancel: {
+      type: Boolean
+    },
+    searchStyle: String,
+    cancelStyle: String,
+    inputStyle: String
+  },
+  data: {
+    inputWidth: 'auto'
+  },
+  methods: {
+    blur: function blur() {
+      this.triggerEvent('blur');
+    },
+    clearInput: function clearInput() {
+      this.setData({
+        focus: true
+      });
+      this.triggerEvent('change', { value: '' });
+    },
+    cancelSearch: function cancelSearch() {
+      this.triggerEvent('cancel');
+    },
+    focus: function focus() {
+      this.triggerEvent('focus');
+    },
+    inputChange: function inputChange(e) {
+      this._inputvalue = e.detail.value;
+      this.triggerEvent('change', { value: e.detail.value });
+    },
+    search: function search(e) {
+      this.triggerEvent('search', { value: e.detail.value });
+    }
+  }
+});
\ No newline at end of file
diff --git a/dist/search/index.json b/dist/search/index.json
new file mode 100644
index 00000000..32640e0d
--- /dev/null
+++ b/dist/search/index.json
@@ -0,0 +1,3 @@
+{
+  "component": true
+}
\ No newline at end of file
diff --git a/dist/search/index.wxml b/dist/search/index.wxml
new file mode 100644
index 00000000..1eeafd04
--- /dev/null
+++ b/dist/search/index.wxml
@@ -0,0 +1,40 @@
+<view
+  class="zan-search {{ searchClass }}"
+  style="{{ searchStyle }}"
+>
+  <view
+    class="zan-search__form {{ useCancel ? 'zan-search__form--cancel' : '' }} input-class"
+    style="{{ inputStyle }}"
+  >
+    <icon type="search" size="15" color="#a9a9a9" />
+    <input
+      class="zan-search__input"
+      placeholder="{{ placeholder }}"
+      placeholder-class="zan-search__placeholder"
+      confirm-type="search"
+      bindfocus="focus"
+      bindblur="blur"
+      value="{{ keyword }}"
+      bindconfirm="search"
+      bindinput="inputChange"
+      focus="{{ focus }}"
+      disabled="{{ disabled }}"
+    />
+    <icon
+      wx:if="{{keyword}}"
+      class="zan-search__clear"
+      type="clear"
+      size="14"
+      color="#bbb"
+      bindtap="clearInput"
+    />
+  </view>
+  <view
+    class="zan-search__cancel cancel-class"
+    wx:if="{{ useCancel }}"
+    bindtap="cancelSearch"
+    style="{{ cancelStyle }}"
+  >
+    {{cancelText || '取消'}}
+  </view>
+</view>
diff --git a/dist/search/index.wxss b/dist/search/index.wxss
new file mode 100644
index 00000000..8ee8f24f
--- /dev/null
+++ b/dist/search/index.wxss
@@ -0,0 +1 @@
+.zan-search{box-sizing:border-box;display:-webkit-box;display:flex;-webkit-box-pack:justify;justify-content:space-between;-webkit-box-align:center;align-items:center;background:0 0;padding:5px 10px}.zan-search.center-placeholder{background:#fff}.zan-search.center-placeholder .zan-search__form{margin-left:50%;-webkit-transform:translateX(-50%);transform:translateX(-50%);border:none}.zan-search.zan-cell::after{display:none}.zan-search__form{display:-webkit-box;display:flex;-webkit-box-flex:1;flex:1;background:#fff;border-radius:4rpx;height:64rpx;line-height:56rpx;-webkit-box-pack:justify;justify-content:space-between;-webkit-box-align:center;align-items:center}.zan-search picker{display:-webkit-box;display:flex;-webkit-box-align:center;align-items:center;height:100%;padding-right:20rpx}.zan-search__form .picker{position:relative;width:110rpx;height:100%;color:#666;font-size:28rpx;margin-left:20rpx}.zan-search__form .picker::after{content:'';width:0;height:0;position:absolute;right:0;top:50%;margin-top:-6rpx;border-top:12rpx solid #333;border-right:8rpx solid transparent;border-left:8rpx solid transparent}.zan-search__form input{height:100%;-webkit-box-flex:1;flex:1;padding:0 20rpx;font-size:28rpx;color:#333}.zan-search__form icon{margin-left:20rpx;line-height:1}.zan-search__clear{padding:12rpx 20rpx}.zan-search__placeholder{font-size:28rpx;color:#cacaca}.zan-search__cancel{align-self:stretch;display:-webkit-inline-box;display:inline-flex;-webkit-box-align:center;align-items:center;padding-left:30rpx;font-size:28rpx;color:#38f}
\ No newline at end of file
diff --git a/dist/toast/toast.js b/dist/toast/toast.js
index 6d3bd9d8..97596db0 100644
--- a/dist/toast/toast.js
+++ b/dist/toast/toast.js
@@ -54,9 +54,13 @@ function Toast(optionsOrMsg, pageCtx) {
     show: true
   }));
 
-  var timeoutId = setTimeout(function () {
-    toastCtx.clear();
-  }, parsedOptions.timeout || 3000);
+  var timeoutId = 0;
+
+  if (parsedOptions.timeout >= 0) {
+    timeoutId = setTimeout(function () {
+      toastCtx.clear();
+    }, parsedOptions.timeout || 3000);
+  }
 
   timeoutData = {
     timeoutId: timeoutId,
diff --git a/dist/tree-select/index.js b/dist/tree-select/index.js
new file mode 100644
index 00000000..ed63b166
--- /dev/null
+++ b/dist/tree-select/index.js
@@ -0,0 +1,87 @@
+'use strict';
+
+var ITEM_HEIGHT = 44;
+
+Component({
+  properties: {
+    items: {
+      type: Array,
+      observer: function observer() {
+        this.updateSubItems();
+        this.updateMainHeight();
+      }
+    },
+    mainActiveIndex: {
+      type: Number,
+      value: 0,
+      observer: function observer() {
+        this.updateSubItems();
+      }
+    },
+    activeId: {
+      type: Number,
+      value: 0
+    },
+    maxHeight: {
+      type: Number,
+      value: 300,
+      observer: function observer() {
+        this.updateItemHeight();
+        this.updateMainHeight();
+      }
+    }
+  },
+
+  data: {
+    subItems: [],
+    mainHeight: 0,
+    itemHeight: 0
+  },
+
+  methods: {
+    // 当一个子项被选择时
+    onItemSelect: function onItemSelect(_ref) {
+      var _ref$currentTarget = _ref.currentTarget,
+          currentTarget = _ref$currentTarget === undefined ? {} : _ref$currentTarget;
+      var _currentTarget$datase = currentTarget.dataset,
+          data = _currentTarget$datase === undefined ? {} : _currentTarget$datase;
+
+      this.triggerEvent('itemclick', Object.assign({}, data.item || {}));
+    },
+
+
+    // 当一个导航被点击时
+    handleNavClick: function handleNavClick(_ref2) {
+      var _ref2$currentTarget = _ref2.currentTarget,
+          currentTarget = _ref2$currentTarget === undefined ? {} : _ref2$currentTarget;
+      var _currentTarget$datase2 = currentTarget.dataset,
+          data = _currentTarget$datase2 === undefined ? {} : _currentTarget$datase2;
+
+      this.triggerEvent('navclick', { index: data.index });
+    },
+
+
+    // 更新子项列表
+    updateSubItems: function updateSubItems() {
+      var selectedItem = this.data.items[this.data.mainActiveIndex] || {};
+
+      this.setData({ subItems: selectedItem.children || [] });
+
+      this.updateItemHeight();
+    },
+
+
+    // 更新组件整体高度，根据最大高度和当前组件需要展示的高度来决定
+    updateMainHeight: function updateMainHeight() {
+      var maxHeight = Math.max(this.data.items.length * ITEM_HEIGHT, this.data.subItems.length * ITEM_HEIGHT);
+
+      this.setData({ mainHeight: Math.min(maxHeight, this.data.maxHeight) });
+    },
+
+
+    // 更新子项列表高度，根据可展示的最大高度和当前子项列表的高度决定
+    updateItemHeight: function updateItemHeight() {
+      this.setData({ itemHeight: Math.min(this.data.subItems.length * ITEM_HEIGHT, this.data.maxHeight) });
+    }
+  }
+});
\ No newline at end of file
diff --git a/dist/tree-select/index.json b/dist/tree-select/index.json
new file mode 100644
index 00000000..fc0d0bf9
--- /dev/null
+++ b/dist/tree-select/index.json
@@ -0,0 +1,6 @@
+{
+  "component": true,
+  "usingComponents": {
+    "zan-icon": "../icon/index"
+  }
+}
diff --git a/dist/tree-select/index.wxml b/dist/tree-select/index.wxml
new file mode 100644
index 00000000..caa6d584
--- /dev/null
+++ b/dist/tree-select/index.wxml
@@ -0,0 +1,34 @@
+<view
+  class="tree-select"
+  style="height: {{ mainHeight }}px"
+>
+  <view class="tree-select__nav">
+    <view
+      wx:for="{{ items }}"
+      class="tree-select__nitem zan-ellipsis {{ mainActiveIndex === index ? 'tree-select__nitem--active' : '' }}"
+      data-index="{{ index }}"
+      bindtap="handleNavClick"
+    >
+      {{ item.text }}
+    </view>
+  </view>
+  <view
+    class="tree-select__content"
+    style="height: {{ itemHeight }}px"
+  >
+    <view
+      wx:for="{{ subItems }}"
+      wx:key="id"
+      class="tree-select__item zan-ellipsis {{ activeId === item.id ? 'tree-select__item--active' : '' }}"
+      data-item="{{ item }}"
+      bindtap="onItemSelect"
+    >
+      {{ item.text }}
+      <zan-icon
+        wx:if="{{ activeId === item.id }}"
+        type="success"
+        class="tree-select__selected"
+      ></zan-icon>
+    </view>
+  </view>
+</view>
diff --git a/dist/tree-select/index.wxss b/dist/tree-select/index.wxss
new file mode 100644
index 00000000..8e5e7933
--- /dev/null
+++ b/dist/tree-select/index.wxss
@@ -0,0 +1 @@
+.zan-pull-left{float:left}.zan-pull-right{float:right}.zan-center{text-align:center}.zan-right{text-align:right}.zan-text-deleted{text-decoration:line-through}.zan-font-8{font-size:8px}.zan-font-10{font-size:10px}.zan-font-12{font-size:12px}.zan-font-14{font-size:14px}.zan-font-16{font-size:16px}.zan-font-18{font-size:18px}.zan-font-20{font-size:20px}.zan-font-22{font-size:22px}.zan-font-24{font-size:24px}.zan-font-26{font-size:26px}.zan-font-30{font-size:30px}.zan-font-bold{font-weight:700}.zan-arrow{position:absolute;right:15px;top:50%;display:inline-block;height:6px;width:6px;border-width:2px 2px 0 0;border-color:#c8c8c8;border-style:solid;-webkit-transform:translateY(-50%) matrix(.71,.71,-.71,.71,0,0);transform:translateY(-50%) matrix(.71,.71,-.71,.71,0,0)}.zan-ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-wrap:normal}.zan-ellipsis--l2{max-height:40px;line-height:20px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.zan-ellipsis--l3{max-height:60px;line-height:20px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}.zan-clearfix{zoom:1}.zan-clearfix::after{content:'';display:table;clear:both}.zan-c-red{color:#f44}.zan-c-black{color:#000}.zan-c-green{color:#06bf04}.zan-c-blue{color:#38f}.zan-c-gray{color:#c9c9c9}.zan-c-gray-dark{color:#999}.zan-c-gray-darker{color:#666}.zan-hairline,.zan-hairline--bottom,.zan-hairline--left,.zan-hairline--right,.zan-hairline--surround,.zan-hairline--top,.zan-hairline--top-bottom{position:relative}.zan-hairline--bottom::after,.zan-hairline--left::after,.zan-hairline--right::after,.zan-hairline--surround::after,.zan-hairline--top-bottom::after,.zan-hairline--top::after,.zan-hairline::after{content:'';position:absolute;top:0;left:0;width:200%;height:200%;-webkit-transform:scale(.5);transform:scale(.5);-webkit-transform-origin:0 0;transform-origin:0 0;pointer-events:none;box-sizing:border-box;border:0 solid #e5e5e5}.zan-hairline--top::after{border-top-width:1px}.zan-hairline--left::after{border-left-width:1px}.zan-hairline--right::after{border-right-width:1px}.zan-hairline--bottom::after{border-bottom-width:1px}.zan-hairline--top-bottom::after{border-width:1px 0}.zan-hairline--surround::after{border-width:1px}.tree-select{-webkit-user-select:none;user-select:none;position:relative;font-size:16px}.tree-select__nav{width:143px;position:absolute;left:0;top:0;bottom:0;overflow:scroll;background-color:#fff;-webkit-overflow-scrolling:touch}.tree-select__nitem{line-height:44px;padding:0 15px;background-color:#fff}.tree-select__nitem--active{background-color:#f8f8f8}.tree-select__content{padding:0 15px;margin-left:143px;overflow:scroll;-webkit-overflow-scrolling:touch}.tree-select__item{position:relative;line-height:44px;padding-left:5px;padding-right:18px}.tree-select__item--active{color:#f44}.tree-select__selected{float:right;position:absolute;right:0;top:0;bottom:0;line-height:inherit}
\ No newline at end of file