diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/model/ModelPageProcessor.java b/webmagic-core/src/main/java/us/codecraft/webmagic/model/ModelPageProcessor.java
index 1fd8c10d..12e85d07 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/model/ModelPageProcessor.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/model/ModelPageProcessor.java
@@ -14,11 +14,12 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 /**
+ * 基于PageProcessor的扩展点。<br>
  * @author code4crafter@gmail.com <br>
  * @date: 13-8-1 <br>
  * Time: 下午8:46 <br>
  */
-public class ModelPageProcessor implements PageProcessor {
+class ModelPageProcessor implements PageProcessor {
 
     private List<PageModelExtractor> pageModelExtractorList = new ArrayList<PageModelExtractor>();
 
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/model/ModelPipeline.java b/webmagic-core/src/main/java/us/codecraft/webmagic/model/ModelPipeline.java
index 439a6291..f9b0015a 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/model/ModelPipeline.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/model/ModelPipeline.java
@@ -10,11 +10,12 @@ import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
+ * 基于Pipeline的扩展点。<br>
  * @author code4crafter@gmail.com <br>
  * @date: 13-8-2 <br>
  * Time: 上午10:47 <br>
  */
-public class ModelPipeline implements Pipeline {
+class ModelPipeline implements Pipeline {
 
     private Map<Class, PageModelPipeline> pageModelPipelines = new ConcurrentHashMap<Class, PageModelPipeline>();
 
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/model/OOSpider.java b/webmagic-core/src/main/java/us/codecraft/webmagic/model/OOSpider.java
index a76144a4..8a3739d1 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/model/OOSpider.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/model/OOSpider.java
@@ -4,17 +4,13 @@ import us.codecraft.webmagic.Site;
 import us.codecraft.webmagic.Spider;
 
 /**
+ * 基于Model的Spider，封装后的入口类。<br>
  * @author code4crafter@gmail.com <br>
  * @date: 13-8-3 <br>
  * Time: 上午9:51 <br>
  */
 public class OOSpider extends Spider {
 
-    /**
-     * OOSpider只能由ObjectPageProcessor创建。
-     *
-     * @param pageProcessor 已定义的抽取规则
-     */
     private ModelPageProcessor modelPageProcessor;
 
     private ModelPipeline modelPipeline;
@@ -24,6 +20,12 @@ public class OOSpider extends Spider {
         this.modelPageProcessor = modelPageProcessor;
     }
 
+    /**
+     * 创建一个爬虫。<br>
+     * @param site
+     * @param pageModelPipeline
+     * @param pageModels
+     */
     public OOSpider(Site site, PageModelPipeline pageModelPipeline, Class... pageModels) {
         this(ModelPageProcessor.create(site, pageModels));
         this.modelPipeline = new ModelPipeline();
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/model/PageModelExtractor.java b/webmagic-core/src/main/java/us/codecraft/webmagic/model/PageModelExtractor.java
index 6ba2c5ee..cf0eeacc 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/model/PageModelExtractor.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/model/PageModelExtractor.java
@@ -13,6 +13,7 @@ import java.util.List;
 import java.util.regex.Pattern;
 
 /**
+ * Model主要逻辑类。将一个带注解的POJO转换为一个PageModelExtractor。<br>
  * @author code4crafter@gmail.com <br>
  * @date: 13-8-1 <br>
  * Time: 下午9:33 <br>