diff --git a/admin.go b/admin.go
index 031e6421..cf5bc63a 100644
--- a/admin.go
+++ b/admin.go
@@ -196,7 +196,7 @@ func listConf(rw http.ResponseWriter, r *http.Request) {
 				BeforeExec:   "Before Exec",
 				AfterExec:    "After Exec",
 				FinishRouter: "Finish Router"} {
-				if bf, ok := BeeApp.Handlers.filters[k]; ok {
+				if bf := BeeApp.Handlers.filters[k]; len(bf) > 0 {
 					filterType = fr
 					filterTypes = append(filterTypes, filterType)
 					resultList := new([][]string)
diff --git a/namespace.go b/namespace.go
index 4007d44c..cfde0111 100644
--- a/namespace.go
+++ b/namespace.go
@@ -44,7 +44,7 @@ func NewNamespace(prefix string, params ...LinkNamespace) *Namespace {
 	return ns
 }
 
-// Cond set condtion function
+// Cond set condition function
 // if cond return true can run this namespace, else can't
 // usage:
 // ns.Cond(func (ctx *context.Context) bool{
@@ -60,7 +60,7 @@ func (n *Namespace) Cond(cond namespaceCond) *Namespace {
 			exception("405", ctx)
 		}
 	}
-	if v, ok := n.handlers.filters[BeforeRouter]; ok {
+	if v := n.handlers.filters[BeforeRouter]; len(v) > 0 {
 		mr := new(FilterRouter)
 		mr.tree = NewTree()
 		mr.pattern = "*"
diff --git a/router.go b/router.go
index 5b4b1ff9..71be4c16 100644
--- a/router.go
+++ b/router.go
@@ -114,7 +114,7 @@ type controllerInfo struct {
 type ControllerRegister struct {
 	routers      map[string]*Tree
 	enableFilter bool
-	filters      map[int][]*FilterRouter
+	filters      [FinishRouter + 1][]*FilterRouter
 	pool         sync.Pool
 }
 
@@ -122,7 +122,6 @@ type ControllerRegister struct {
 func NewControllerRegister() *ControllerRegister {
 	cr := &ControllerRegister{
 		routers: make(map[string]*Tree),
-		filters: make(map[int][]*FilterRouter),
 	}
 	cr.pool.New = func() interface{} {
 		return beecontext.NewContext()
@@ -408,7 +407,6 @@ func (p *ControllerRegister) AddAutoPrefix(prefix string, c ControllerInterface)
 // InsertFilter Add a FilterFunc with pattern rule and action constant.
 // The bool params is for setting the returnOnOutput value (false allows multiple filters to execute)
 func (p *ControllerRegister) InsertFilter(pattern string, pos int, filter FilterFunc, params ...bool) error {
-
 	mr := new(FilterRouter)
 	mr.tree = NewTree()
 	mr.pattern = pattern
@@ -426,9 +424,13 @@ func (p *ControllerRegister) InsertFilter(pattern string, pos int, filter Filter
 }
 
 // add Filter into
-func (p *ControllerRegister) insertFilterRouter(pos int, mr *FilterRouter) error {
-	p.filters[pos] = append(p.filters[pos], mr)
+func (p *ControllerRegister) insertFilterRouter(pos int, mr *FilterRouter) (err error) {
+	if pos < BeforeStatic || pos > FinishRouter {
+		err = fmt.Errorf("can not find your filter postion")
+		return
+	}
 	p.enableFilter = true
+	p.filters[pos] = append(p.filters[pos], mr)
 	return nil
 }
 
@@ -577,20 +579,16 @@ func (p *ControllerRegister) geturl(t *Tree, url, controllName, methodName strin
 	return false, ""
 }
 
-func (p *ControllerRegister) execFilter(context *beecontext.Context, pos int, urlPath string) (started bool) {
-	if p.enableFilter {
-		if l, ok := p.filters[pos]; ok {
-			for _, filterR := range l {
-				if filterR.returnOnOutput && context.ResponseWriter.Started {
-					return true
-				}
-				if ok := filterR.ValidRouter(urlPath, context); ok {
-					filterR.filterFunc(context)
-				}
-				if filterR.returnOnOutput && context.ResponseWriter.Started {
-					return true
-				}
-			}
+func (p *ControllerRegister) execFilter(context *beecontext.Context, urlPath string, pos int) (started bool) {
+	for _, filterR := range p.filters[pos] {
+		if filterR.returnOnOutput && context.ResponseWriter.Started {
+			return true
+		}
+		if ok := filterR.ValidRouter(urlPath, context); ok {
+			filterR.filterFunc(context)
+		}
+		if filterR.returnOnOutput && context.ResponseWriter.Started {
+			return true
 		}
 	}
 	return false
@@ -617,11 +615,10 @@ func (p *ControllerRegister) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 		context.Output.Header("Server", BConfig.ServerName)
 	}
 
-	var urlPath string
+	var urlPath = r.URL.Path
+
 	if !BConfig.RouterCaseSensitive {
-		urlPath = strings.ToLower(r.URL.Path)
-	} else {
-		urlPath = r.URL.Path
+		urlPath = strings.ToLower(urlPath)
 	}
 
 	// filter wrong http method
@@ -631,11 +628,12 @@ func (p *ControllerRegister) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 	}
 
 	// filter for static file
-	if p.execFilter(context, BeforeStatic, urlPath) {
+	if len(p.filters[BeforeStatic]) > 0 && p.execFilter(context, urlPath, BeforeStatic) {
 		goto Admin
 	}
 
 	serverStaticRouter(context)
+
 	if context.ResponseWriter.Started {
 		findRouter = true
 		goto Admin
@@ -655,7 +653,7 @@ func (p *ControllerRegister) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 		if err != nil {
 			Error(err)
 			exception("503", context)
-			return
+			goto Admin
 		}
 		defer func() {
 			if context.Input.CruSession != nil {
@@ -663,8 +661,7 @@ func (p *ControllerRegister) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 			}
 		}()
 	}
-
-	if p.execFilter(context, BeforeRouter, urlPath) {
+	if len(p.filters[BeforeRouter]) > 0 && p.execFilter(context, urlPath, BeforeRouter) {
 		goto Admin
 	}
 
@@ -693,7 +690,7 @@ func (p *ControllerRegister) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 
 	if findRouter {
 		//execute middleware filters
-		if p.execFilter(context, BeforeExec, urlPath) {
+		if len(p.filters[BeforeExec]) > 0 && p.execFilter(context, urlPath, BeforeExec) {
 			goto Admin
 		}
 		isRunnable := false
@@ -794,12 +791,13 @@ func (p *ControllerRegister) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 		}
 
 		//execute middleware filters
-		if p.execFilter(context, AfterExec, urlPath) {
+		if len(p.filters[AfterExec]) > 0 && p.execFilter(context, urlPath, AfterExec) {
 			goto Admin
 		}
 	}
-
-	p.execFilter(context, FinishRouter, urlPath)
+	if len(p.filters[FinishRouter]) > 0 && p.execFilter(context, urlPath, FinishRouter) {
+		goto Admin
+	}
 
 Admin:
 	//admin module record QPS