diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/Site.java b/webmagic-core/src/main/java/us/codecraft/webmagic/Site.java
index a84ba48..b5f8865 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/Site.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/Site.java
@@ -24,7 +24,7 @@ public class Site {
     /**
      * startUrls is the urls the crawler to start with.
      */
-    private List<String> startUrls = new ArrayList<String>();
+    private List<Request> startRequests = new ArrayList<Request>();
 
     private int sleepTime = 3000;
 
@@ -38,7 +38,7 @@ public class Site {
 
     private Set<Integer> acceptStatCode = DEFAULT_STATUS_CODE_SET;
 
-    private Map<String,String> headers = new HashMap<String, String>();
+    private Map<String, String> headers = new HashMap<String, String>();
 
     public static interface HeaderConst {
 
@@ -182,9 +182,16 @@ public class Site {
      * get start urls
      *
      * @return start urls
+     * @see #getStartRequests
+     * @deprecated
      */
+    @Deprecated
     public List<String> getStartUrls() {
-        return startUrls;
+        return UrlUtils.convertToUrls(startRequests);
+    }
+
+    public List<Request> getStartRequests() {
+        return startRequests;
     }
 
     /**
@@ -194,11 +201,19 @@ public class Site {
      * @return this
      */
     public Site addStartUrl(String startUrl) {
-        this.startUrls.add(startUrl);
-        if (domain == null) {
-            if (startUrls.size() > 0) {
-                domain = UrlUtils.getDomain(startUrls.get(0));
-            }
+        return addStartRequest(new Request(startUrl));
+    }
+
+    /**
+     * Add a url to start url.<br>
+     *
+     * @param startUrl
+     * @return this
+     */
+    public Site addStartRequest(Request startRequest) {
+        this.startRequests.add(startRequest);
+        if (domain == null && startRequest.getUrl() != null) {
+            domain = UrlUtils.getDomain(startRequest.getUrl());
         }
         return this;
     }
@@ -241,12 +256,13 @@ public class Site {
     /**
      * Put an Http header for downloader. <br/>
      * Use {@link #addCookie(String, String)} for cookie and {@link #setUserAgent(String)} for user-agent. <br/>
-     * @param key key of http header, there are some keys constant in {@link HeaderConst}
+     *
+     * @param key   key of http header, there are some keys constant in {@link HeaderConst}
      * @param value value of header
      * @return
      */
-    public Site addHeader(String key, String value){
-        headers.put(key,value);
+    public Site addHeader(String key, String value) {
+        headers.put(key, value);
         return this;
     }
 
@@ -279,23 +295,6 @@ public class Site {
         return this;
     }
 
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        Site site = (Site) o;
-
-        if (acceptStatCode != null ? !acceptStatCode.equals(site.acceptStatCode) : site.acceptStatCode != null)
-            return false;
-        if (!domain.equals(site.domain)) return false;
-        if (!startUrls.equals(site.startUrls)) return false;
-        if (charset != null ? !charset.equals(site.charset) : site.charset != null) return false;
-        if (userAgent != null ? !userAgent.equals(site.userAgent) : site.userAgent != null) return false;
-
-        return true;
-    }
-
     public Task toTask() {
         return new Task() {
             @Override
@@ -310,13 +309,60 @@ public class Site {
         };
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Site site = (Site) o;
+
+        if (cycleRetryTimes != site.cycleRetryTimes) return false;
+        if (retryTimes != site.retryTimes) return false;
+        if (sleepTime != site.sleepTime) return false;
+        if (timeOut != site.timeOut) return false;
+        if (acceptStatCode != null ? !acceptStatCode.equals(site.acceptStatCode) : site.acceptStatCode != null)
+            return false;
+        if (charset != null ? !charset.equals(site.charset) : site.charset != null) return false;
+        if (cookies != null ? !cookies.equals(site.cookies) : site.cookies != null) return false;
+        if (domain != null ? !domain.equals(site.domain) : site.domain != null) return false;
+        if (headers != null ? !headers.equals(site.headers) : site.headers != null) return false;
+        if (startRequests != null ? !startRequests.equals(site.startRequests) : site.startRequests != null)
+            return false;
+        if (userAgent != null ? !userAgent.equals(site.userAgent) : site.userAgent != null) return false;
+
+        return true;
+    }
+
     @Override
     public int hashCode() {
-        int result = domain.hashCode();
-        result = 31 * result + (startUrls != null ? startUrls.hashCode() : 0);
+        int result = domain != null ? domain.hashCode() : 0;
         result = 31 * result + (userAgent != null ? userAgent.hashCode() : 0);
+        result = 31 * result + (cookies != null ? cookies.hashCode() : 0);
         result = 31 * result + (charset != null ? charset.hashCode() : 0);
+        result = 31 * result + (startRequests != null ? startRequests.hashCode() : 0);
+        result = 31 * result + sleepTime;
+        result = 31 * result + retryTimes;
+        result = 31 * result + cycleRetryTimes;
+        result = 31 * result + timeOut;
         result = 31 * result + (acceptStatCode != null ? acceptStatCode.hashCode() : 0);
+        result = 31 * result + (headers != null ? headers.hashCode() : 0);
         return result;
     }
+
+    @Override
+    public String toString() {
+        return "Site{" +
+                "domain='" + domain + '\'' +
+                ", userAgent='" + userAgent + '\'' +
+                ", cookies=" + cookies +
+                ", charset='" + charset + '\'' +
+                ", startRequests=" + startRequests +
+                ", sleepTime=" + sleepTime +
+                ", retryTimes=" + retryTimes +
+                ", cycleRetryTimes=" + cycleRetryTimes +
+                ", timeOut=" + timeOut +
+                ", acceptStatCode=" + acceptStatCode +
+                ", headers=" + headers +
+                '}';
+    }
 }
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/Spider.java b/webmagic-core/src/main/java/us/codecraft/webmagic/Spider.java
index da0d98a..54f51d9 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/Spider.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/Spider.java
@@ -11,6 +11,7 @@ import us.codecraft.webmagic.scheduler.QueueScheduler;
 import us.codecraft.webmagic.scheduler.Scheduler;
 import us.codecraft.webmagic.utils.EnvironmentUtil;
 import us.codecraft.webmagic.utils.ThreadUtils;
+import us.codecraft.webmagic.utils.UrlUtils;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -60,7 +61,7 @@ public class Spider implements Runnable, Task {
 
     protected PageProcessor pageProcessor;
 
-    protected List<String> startUrls;
+    protected List<Request> startRequests;
 
     protected Site site;
 
@@ -107,7 +108,7 @@ public class Spider implements Runnable, Task {
     public Spider(PageProcessor pageProcessor) {
         this.pageProcessor = pageProcessor;
         this.site = pageProcessor.getSite();
-        this.startUrls = pageProcessor.getSite().getStartUrls();
+        this.startRequests = pageProcessor.getSite().getStartRequests();
     }
 
     /**
@@ -119,7 +120,20 @@ public class Spider implements Runnable, Task {
      */
     public Spider startUrls(List<String> startUrls) {
         checkIfRunning();
-        this.startUrls = startUrls;
+        this.startRequests = UrlUtils.convertToRequests(startUrls);
+        return this;
+    }
+
+    /**
+     * Set startUrls of Spider.<br>
+     * Prior to startUrls of Site.
+     *
+     * @param startUrls
+     * @return this
+     */
+    public Spider startRequest(List<Request> startRequests) {
+        checkIfRunning();
+        this.startRequests = startRequests;
         return this;
     }
 
@@ -231,11 +245,11 @@ public class Spider implements Runnable, Task {
         }
         downloader.setThread(threadNum);
         executorService = ThreadUtils.newFixedThreadPool(threadNum);
-        if (startUrls != null) {
-            for (String startUrl : startUrls) {
-                scheduler.push(new Request(startUrl), this);
+        if (startRequests != null) {
+            for (Request request : startRequests) {
+                scheduler.push(request, this);
             }
-            startUrls.clear();
+            startRequests.clear();
         }
     }
 
@@ -390,6 +404,20 @@ public class Spider implements Runnable, Task {
         return this;
     }
 
+    /**
+     * Add urls with information to crawl.<br/>
+     *
+     * @param urls
+     * @return
+     */
+    public Spider addRequest(Request... requests) {
+        for (Request request : requests) {
+            addRequest(request);
+        }
+        signalNewUrl();
+        return this;
+    }
+
     private void waitNewUrl() {
         try {
             newUrlLock.lock();
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/processor/example/OschinaBlogPageProcesser.java b/webmagic-core/src/main/java/us/codecraft/webmagic/processor/example/OschinaBlogPageProcesser.java
index 2c53b2d..fa8dab6 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/processor/example/OschinaBlogPageProcesser.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/processor/example/OschinaBlogPageProcesser.java
@@ -34,6 +34,6 @@ public class OschinaBlogPageProcesser implements PageProcessor {
     }
 
     public static void main(String[] args) {
-        Spider.create(new OschinaBlogPageProcesser()).thread(10).run();
+        Spider.create(new OschinaBlogPageProcesser()).thread(2).run();
     }
 }
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/utils/UrlUtils.java b/webmagic-core/src/main/java/us/codecraft/webmagic/utils/UrlUtils.java
index 9ca776d..e45f948 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/utils/UrlUtils.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/utils/UrlUtils.java
@@ -1,10 +1,13 @@
 package us.codecraft.webmagic.utils;
 
 import org.apache.commons.lang3.StringUtils;
+import us.codecraft.webmagic.Request;
 
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -18,7 +21,7 @@ public class UrlUtils {
 
     /**
      * canonicalizeUrl
-     *
+     * <p/>
      * Borrowed from Jsoup.
      *
      * @param url
@@ -85,6 +88,22 @@ public class UrlUtils {
         return stringBuilder.toString();
     }
 
+    public static List<Request> convertToRequests(List<String> urls) {
+        List<Request> requestList = new ArrayList<Request>(urls.size());
+        for (String url : urls) {
+            requestList.add(new Request(url));
+        }
+        return requestList;
+    }
+
+    public static List<String> convertToUrls(List<Request> requests) {
+        List<String> urlList = new ArrayList<String>(requests.size());
+        for (Request request : requests) {
+            urlList.add(request.getUrl());
+        }
+        return urlList;
+    }
+
     private static final Pattern patternForCharset = Pattern.compile("charset\\s*=\\s*['\"]*([^\\s;'\"]*)");
 
     public static String getCharset(String contentType) {