diff --git a/webmagic-plugin/webmagic-selenium/src/main/java/us/codecraft/webmagic/selenium/downloader/SeleniumDownloader.java b/webmagic-plugin/webmagic-selenium/src/main/java/us/codecraft/webmagic/selenium/downloader/SeleniumDownloader.java
index b4dd372..54e3c9c 100644
--- a/webmagic-plugin/webmagic-selenium/src/main/java/us/codecraft/webmagic/selenium/downloader/SeleniumDownloader.java
+++ b/webmagic-plugin/webmagic-selenium/src/main/java/us/codecraft/webmagic/selenium/downloader/SeleniumDownloader.java
@@ -20,18 +20,22 @@ import java.util.Map;
 /**
  * 使用Selenium调用浏览器进行渲染。目前仅支持chrome。<br>
  * 需要下载Selenium driver支持。<br>
+ *
  * @author yihua.huang@dianping.com <br>
  * @date: 13-7-26 <br>
  * Time: 下午1:37 <br>
  */
-public class SeleniumDownloader implements Downloader,Destroyable {
+public class SeleniumDownloader implements Downloader, Destroyable {
 
     private WebDriverPool webDriverPool;
 
     private Logger logger = Logger.getLogger(getClass());
 
+    private int sleepTime = 0;
+
     /**
      * 新建
+     *
      * @param chromeDriverPath
      */
     public SeleniumDownloader(String chromeDriverPath) {
@@ -44,6 +48,16 @@ public class SeleniumDownloader implements Downloader,Destroyable {
         webDriverPool = new WebDriverPool(poolSize);
     }
 
+    /**
+     * set sleep time to wait until load success
+     * @param sleepTime
+     * @return this
+     */
+    public SeleniumDownloader setSleepTime(int sleepTime) {
+        this.sleepTime = sleepTime;
+        return this;
+    }
+
     @Override
     public Page download(Request request, Task task) {
         WebDriver webDriver;
@@ -55,6 +69,11 @@ public class SeleniumDownloader implements Downloader,Destroyable {
         }
         logger.info("downloading page " + request.getUrl());
         webDriver.get(request.getUrl());
+        try {
+            Thread.sleep(sleepTime);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
         WebDriver.Options manage = webDriver.manage();
         Site site = task.getSite();
         if (site.getCookies() != null) {
@@ -65,6 +84,7 @@ public class SeleniumDownloader implements Downloader,Destroyable {
         }
         WebElement webElement = webDriver.findElement(By.xpath("/html"));
         String content = webElement.getAttribute("outerHTML");
+        //
         Page page = new Page();
         page.setHtml(new Html(UrlUtils.fixAllRelativeHrefs(content, request.getUrl())));
         page.setUrl(new PlainText(request.getUrl()));
diff --git a/webmagic-plugin/webmagic-selenium/src/test/java/us/codecraft/webmagic/selenium/downloader/SeleniumDownloaderTest.java b/webmagic-plugin/webmagic-selenium/src/test/java/us/codecraft/webmagic/selenium/downloader/SeleniumDownloaderTest.java
index 615ad86..4aa9919 100644
--- a/webmagic-plugin/webmagic-selenium/src/test/java/us/codecraft/webmagic/selenium/downloader/SeleniumDownloaderTest.java
+++ b/webmagic-plugin/webmagic-selenium/src/test/java/us/codecraft/webmagic/selenium/downloader/SeleniumDownloaderTest.java
@@ -14,7 +14,7 @@ import us.codecraft.webmagic.Task;
  */
 public class SeleniumDownloaderTest {
 
-    private String chromeDriverPath = "";
+    private String chromeDriverPath = "/Users/yihua/Downloads/chromedriver";
 
     @Ignore("need chrome driver")
     @Test
@@ -37,4 +37,5 @@ public class SeleniumDownloaderTest {
         }
         System.out.println(System.currentTimeMillis() - time1);
     }
+
 }