diff --git a/suffixExt_test.go b/suffixExt_test.go
new file mode 100644
index 0000000..c5d875f
--- /dev/null
+++ b/suffixExt_test.go
@@ -0,0 +1,28 @@
+package mux
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"testing"
+)
+
+func TestMain(t *testing.T) {
+	mx := New()
+	mx.Get("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("hello, beego mux"))
+	})
+
+	mx.Get("/hello", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "hello")
+	})
+
+	AddSuffixExt(".foo")
+	fmt.Println(GetSuffixExts())
+	AddSuffixExt(".foo2")
+	fmt.Println(GetSuffixExts())
+	RemoveSuffixExt(".foo")
+	fmt.Println(GetSuffixExts())
+
+	log.Fatal(http.ListenAndServe("127.0.0.1:9999", mx))
+}
diff --git a/tree.go b/tree.go
index 372bab6..4914194 100644
--- a/tree.go
+++ b/tree.go
@@ -637,3 +637,24 @@ func pathClean(path string) string {
 	}
 	return strings.Replace(path, `//`, "/", -1)
 }
+
+// AddSuffixExt add new suffix ext
+// 	mux.AddSuffixExt(".foo") will match /any/path.foo
+func AddSuffixExt(extString string) {
+	allowSuffixExt = append(allowSuffixExt, extString)
+}
+
+// RemoveSuffixExt remove exist suffix ext
+func RemoveSuffixExt(extString string) {
+	for k, v := range allowSuffixExt {
+		if extString == v {
+			allowSuffixExt = append(allowSuffixExt[:k], allowSuffixExt[k+1:]...)
+			break
+		}
+	}
+}
+
+// GetSuffixExts get all exist suffix exts slice
+func GetSuffixExts() []string {
+	return allowSuffixExt
+}