diff --git a/src/index.js b/src/index.js
index cae42dd..a325f3c 100644
--- a/src/index.js
+++ b/src/index.js
@@ -71,9 +71,15 @@ export function createApp({
       if ($router) {
         App.prototype.mounted = function (...args) {
           let $view = window.__wkitd__.get('ROUTER_VIEW')
-          $view.sync($router.getViews())
-          $router.init()
-          mounted.call(this, ...args)
+          if ($view) {
+            $view.sync($router.getViews())
+            $router.init()
+            mounted.call(this, ...args)
+          } else {
+            throw new Error(
+              `<router-view /> not found, "Router" works Unexpected.`
+            )
+          }
         }
       }
       App.reg('app')
diff --git a/src/router/hash-router.js b/src/router/hash-router.js
index 40028b2..78312ab 100644
--- a/src/router/hash-router.js
+++ b/src/router/hash-router.js
@@ -18,16 +18,14 @@ const DEFAULT_OPTIONS = {
 const RULE_REGEXP =
   /(:id)|(\{id\})|(\{id:([A-z\d\,\[\]\{\}\-\+\*\?\!:\^\$]*)\})/g
 
-const __ready__ = Symbol('ready')
-
 class Router {
-  [__ready__] = false
-
   #tables = new Map()
   #views = new Set()
 
-  #options = Object.create(null)
+  #targets = new Set()
 
+  #ready = false
+  #options = Object.create(null)
   #route = Object.create(null)
 
   constructor(options = {}) {
@@ -42,10 +40,10 @@ class Router {
 
   #hashchange(ev) {
     if (ev?.type === 'load') {
-      if (this[__ready__]) {
+      if (this.#ready) {
         return
       }
-      this[__ready__] = true
+      this.#ready = true
     }
 
     let path = location.hash
@@ -89,12 +87,6 @@ class Router {
   }
 
   #add(route) {
-    // 特殊值"!", 则自动作非匹配回调处理
-    // if (route.path === '!') {
-    //   // this.noMatch = callback
-    //   this.#views.add(route.name)
-    //   return
-    // }
     if (route.path !== '!' && route.path[0] !== '/') {
       console.error('路由规则必须以"/"开头')
       return
@@ -102,6 +94,7 @@ class Router {
     route.path = route.path.replace(/^[\/]+|[\/]+$|\s+/g, '')
 
     this.#tables.set(route.path, this.#parseRule(route))
+    this.#views.add(route.name)
   }
 
   // 路由检测
@@ -112,7 +105,6 @@ class Router {
     if (!$view || (!allowReload && path === this.#route.path)) {
       return
     }
-    // console.log('<><><><>')
 
     for (let [k, route] of this.#tables) {
       let args = path.match(route.regexp)
@@ -123,16 +115,31 @@ class Router {
         this.#route.name = route.name
         this.#route.params = args
         this.#route.query = {}
-        break
+        this.#rsync()
+        return
       }
     }
-    // this.noMatch && this.noMatch(this.path)
+    if (this.#tables.get('!')) {
+      route = this.#tables.get('!')
+      $view.current = route.name
+      this.#route = { path, name: route.name, params: {}, query: {} }
+    }
+  }
+
+  #rsync() {
+    for (let callback of this.#targets) {
+      callback(this.route)
+    }
   }
 
   init() {
     this.#hashchange()
   }
 
+  rsync(callback) {
+    this.#targets.add(callback)
+  }
+
   getViews() {
     return Array.from(this.#views)
   }
@@ -166,7 +173,7 @@ class Router {
     // 因为先初始化,才开始监听路由规则
     // 所以会导致wondow load的时候, 规则还没生效, 而生效之后,load已经结束
     // 所以这里需要手动再触发一次load
-    if (this[__ready__]) {
+    if (this.#ready) {
       this.#hashchange()
     } else {
       fire(window, 'load')
diff --git a/src/router/index.js b/src/router/index.js
index ce9473c..66e0b56 100644
--- a/src/router/index.js
+++ b/src/router/index.js
@@ -14,7 +14,21 @@ export { createWebHashHistory, createWebHistory }
 class Router extends Component {
   static props = {
     keepAlive: false,
-    current: 'str!'
+    transition: false,
+    current: {
+      type: String,
+      default: '',
+      attribute: false,
+      observer(v, old) {
+        if (this.keepAlive && v) {
+          if (old && this.$refs[old]) {
+            this.$refs[old].deactivated()
+          }
+          this.$refs[v]?.$animate()
+          this.$refs[v]?.activated()
+        }
+      }
+    }
   }
 
   #views = []
@@ -28,10 +42,36 @@ class Router extends Component {
   }
 
   render() {
+    let option = {
+      immediate: true,
+      custom: [
+        { transform: 'translateX(-32px)', opacity: 0 },
+        { transform: 'translateX(0)', opacity: 1 }
+      ]
+    }
     if (this.keepAlive) {
-      return html``
+      let template = this.#views.map(it => [
+        this.transition
+          ? `<${it} ref="${it}" :__keep_alive__="%s" #animation="%s" style="%s"></${it}>`
+          : `<${it} ref="${it}" :__keep_alive__="%s" style=%s></${it}>`,
+        [
+          this.current === it,
+          { ...option, immediate: this.current === it },
+          this.current === it ? '' : 'display:none'
+        ]
+      ])
+
+      return raw(
+        template.map(it => it[0]).join(''),
+        template.map(it => it[1]).flat()
+      )
     } else {
       if (this.current) {
+        if (this.transition) {
+          return raw(`<${this.current} #animation="%s"></${this.current}>`, [
+            option
+          ])
+        }
         return raw(`<${this.current}></${this.current}>`)
       }
     }