diff --git a/lib/response.js b/lib/response.js
index 2d96c22..2420b30 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -15,6 +15,7 @@ var assert = require('assert');
 var http = require('http');
 var path = require('path');
 var vary = require('vary');
+var contentDisposition = require('content-disposition');
 var basename = path.basename;
 var extname = path.extname;
 
@@ -245,9 +246,7 @@ module.exports = {
 
   attachment: function(filename){
     if (filename) this.type = extname(filename);
-    this.set('Content-Disposition', filename
-      ? 'attachment; filename="' + basename(filename) + '"'
-      : 'attachment');
+    this.set('Content-Disposition', contentDisposition(filename));
   },
 
   /**
diff --git a/package.json b/package.json
index 7d43920..1c8c172 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,7 @@
     "media-typer": "~0.3.0",
     "on-finished": "~2.1.0",
     "co": "~3.1.0",
+    "content-disposition": "~0.1.0",
     "debug": "*",
     "fresh": "~0.2.1",
     "koa-compose": "~2.3.0",
diff --git a/test/response/attachment.js b/test/response/attachment.js
index 5246f4b..f39097f 100644
--- a/test/response/attachment.js
+++ b/test/response/attachment.js
@@ -1,5 +1,7 @@
 
+var request = require('supertest');
 var context = require('../context');
+var koa = require('../..');
 
 describe('ctx.attachment([filename])', function(){
   describe('when given a filename', function(){
@@ -18,4 +20,28 @@ describe('ctx.attachment([filename])', function(){
       ctx.response.header['content-disposition'].should.equal('attachment');
     })
   })
-})
\ No newline at end of file
+
+  describe('when given a no-ascii filename', function(){
+    it('should set the encodeURI filename param', function(){
+      var ctx = context();
+      ctx.attachment('path/to/include-no-ascii-char-中文名-ok.png');
+      var str = 'attachment; filename=\"include-no-ascii-char-???-ok.png\"; filename*=UTF-8\'\'include-no-ascii-char-%E4%B8%AD%E6%96%87%E5%90%8D-ok.png';
+      ctx.response.header['content-disposition'].should.equal(str);
+    })
+
+    it('should work with http client', function(done){
+      var app = koa();
+
+      app.use(function* (next){
+        this.attachment('path/to/include-no-ascii-char-中文名-ok.json')
+        this.body = {foo: 'bar'}
+      })
+
+      request(app.listen())
+      .get('/')
+      .expect('content-disposition', 'attachment; filename="include-no-ascii-char-???-ok.json"; filename*=UTF-8\'\'include-no-ascii-char-%E4%B8%AD%E6%96%87%E5%90%8D-ok.json')
+      .expect({foo: 'bar'})
+      .expect(200, done)
+    })
+  })
+})