diff --git a/cli/build.js b/cli/build.js
index 909e3ba..f6f1043 100644
--- a/cli/build.js
+++ b/cli/build.js
@@ -7,6 +7,7 @@ const Component = require('../lib/component');
 const Sprite = require('../lib/sprite');
 const pngquant = require('../lib/pngquant');
 const rebasePath = require('../lib/rebasePath');
+const cleanCSS = require('../lib/cleanCSS');
 
 const fse = require('fs-extra');
 const async = require('async');
@@ -40,6 +41,9 @@ Processor.sass = function (config, input, callback) {
             base: config._SOURCE_ROOT,
             prefix: config.production + utils.dirToPath(config._PRD_PREFIX)
         }))
+        .pipe(cleanCSS({
+            enabled: config._isPrd
+        }))
         .pipe(vfs.dest(config._DEST_ROOT))
         .on('end', callback);
 };
diff --git a/lib/cleanCSS.js b/lib/cleanCSS.js
new file mode 100644
index 0000000..1faf7b6
--- /dev/null
+++ b/lib/cleanCSS.js
@@ -0,0 +1,30 @@
+'use strict';
+const path = require('path');
+const map = require('map-stream');
+const CleanCSS = require('clean-css');
+const _    = require('lodash');
+const utils = require('../lib/utils');
+
+function cleanCSS(file, option, cb) {
+    let content = String(file.contents);
+    let defaults = {};
+
+    if (!option.enabled) {
+        return cb(null, file);
+    }
+
+    new CleanCSS(_.defaultsDeep(option, defaults)).minify(content, function (err, result) {
+        if (err) {
+            return cb(err);
+        }
+
+        file.contents = new Buffer(result.styles);
+        cb(null, file);
+    });
+}
+
+module.exports = function(option) {
+    return map(function(file, cb) {
+        cleanCSS(file, option, cb);
+    });
+};
\ No newline at end of file
diff --git a/lib/rebasePath.js b/lib/rebasePath.js
index d5c9357..919405f 100644
--- a/lib/rebasePath.js
+++ b/lib/rebasePath.js
@@ -20,6 +20,7 @@ function rebase(file, option, cb) {
         return cb(null, file);
     }
 
+    let urls = [];
     _.uniq(matches).forEach((match) => {
         if (!utils.isAbsUrl(match) && !utils.isDataUri(match)) {
             // 去掉多余字符如：url(,),",'
@@ -28,11 +29,18 @@ function rebase(file, option, cb) {
             let absDir = path.resolve(dirname, items);
             let relPath = utils.dirToPath(path.relative(option.base, absDir));
 
-            content = content.replace(match, `url(${option.prefix}/${relPath})`);
-            // console.log(option.prefix + '/' + relPath);
+            urls.push({
+                path: items,
+                production: `${option.prefix}/${relPath}`
+            });
         }
     });
 
+    urls.forEach(function (url) {
+        let urlRE = new RegExp(url.path, 'gi');
+        content = content.replace(urlRE, url.production);
+    });
+
     file.contents = new Buffer(content);
 
     cb(null, file);
diff --git a/package.json b/package.json
index a19087c..f840a12 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wooo",
-  "version": "0.0.8",
+  "version": "0.0.9",
   "author": "keelii <keeliizhou@gmail.com>",
   "description": "FE Build tool with easy cli.",
   "license": "MIT",
@@ -29,6 +29,7 @@
     "async": "^1.5.2",
     "chalk": "^1.1.1",
     "chokidar": "^1.4.2",
+    "clean-css": "^3.4.9",
     "fs-extra": "^0.26.5",
     "globby": "^4.0.0",
     "imagemin-pngquant": "^4.2.2",