diff --git a/novel-crawl/src/main/java/com/java2nb/novel/core/listener/StarterListener.java b/novel-crawl/src/main/java/com/java2nb/novel/core/listener/StarterListener.java
index 626b59a..6a81f3b 100644
--- a/novel-crawl/src/main/java/com/java2nb/novel/core/listener/StarterListener.java
+++ b/novel-crawl/src/main/java/com/java2nb/novel/core/listener/StarterListener.java
@@ -9,9 +9,11 @@ import com.java2nb.novel.entity.BookIndex;
 import com.java2nb.novel.entity.CrawlSource;
 import com.java2nb.novel.service.BookService;
 import com.java2nb.novel.service.CrawlService;
+import com.java2nb.novel.utils.Constants;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.time.DateUtils;
+import org.springframework.beans.factory.annotation.Value;
 
 import javax.servlet.ServletContextEvent;
 import javax.servlet.ServletContextListener;
@@ -33,43 +35,54 @@ public class StarterListener implements ServletContextListener {
 
     private final CrawlService crawlService;
 
+    @Value("${crawl.update.thread}")
+    private int updateThreadCount;
+
     @Override
     public void contextInitialized(ServletContextEvent sce) {
         log.info("程序启动,开始执行自动更新线程。。。");
-        new Thread(() -> {
-            while (true) {
-                try {
-                    //1.查询最新目录更新时间在一个月之内的前100条需要更新的数据
-                    Date currentDate = new Date();
-                    Date startDate = DateUtils.addDays(currentDate, -30);
-                    List<Book> bookList = bookService.queryNeedUpdateBook(startDate, 100);
-                    for (Book needUpdateBook : bookList) {
-                        try {
-                            //查询爬虫源规则
-                            CrawlSource source = crawlService.queryCrawlSource(needUpdateBook.getCrawlSourceId());
-                            RuleBean ruleBean = new ObjectMapper().readValue(source.getCrawlRule(), RuleBean.class);
-                            //解析小说基本信息
-                            Book book = CrawlParser.parseBook(ruleBean, needUpdateBook.getCrawlBookId());
-                            //这里只做老书更新
-                            book.setId(needUpdateBook.getId());
-                            book.setPicUrl(needUpdateBook.getPicUrl());
-                            //查询已存在的章节
-                            Map<Integer, BookIndex> existBookIndexMap = bookService.queryExistBookIndexMap(needUpdateBook.getId());
-                            //解析章节目录
-                            Map<Integer, List> indexAndContentList = CrawlParser.parseBookIndexAndContent(needUpdateBook.getCrawlBookId(),book, ruleBean, existBookIndexMap);
-                            bookService.updateBookAndIndexAndContent(book, (List<BookIndex>) indexAndContentList.get(CrawlParser.BOOK_INDEX_LIST_KEY), (List<BookContent>) indexAndContentList.get(CrawlParser.BOOK_CONTENT_LIST_KEY),existBookIndexMap);
-                        }catch (Exception e){
-                            log.error(e.getMessage(), e);
+        for(int i = 0 ; i<updateThreadCount; i++) {
+            new Thread(() -> {
+                while (true) {
+                    try {
+                        //1.查询最新目录更新时间在一个月之内的前100条需要更新的数据
+                        Date currentDate = new Date();
+                        Date startDate = DateUtils.addDays(currentDate, -30);
+                        List<Book> bookList ;
+                        synchronized (this) {
+                            bookList = bookService.queryNeedUpdateBook(startDate, 100);
+                        }
+                        for (Book needUpdateBook : bookList) {
+                            try {
+                                //查询爬虫源规则
+                                CrawlSource source = crawlService.queryCrawlSource(needUpdateBook.getCrawlSourceId());
+                                RuleBean ruleBean = new ObjectMapper().readValue(source.getCrawlRule(), RuleBean.class);
+                                //解析小说基本信息
+                                Book book = CrawlParser.parseBook(ruleBean, needUpdateBook.getCrawlBookId());
+                                //这里只做老书更新
+                                book.setId(needUpdateBook.getId());
+                                if(needUpdateBook.getPicUrl()!=null && needUpdateBook.getPicUrl().startsWith(Constants.LOCAL_PIC_PREFIX)) {
+                                    //本地图片则不更新
+                                    book.setPicUrl(null);
+                                }
+                                //查询已存在的章节
+                                Map<Integer, BookIndex> existBookIndexMap = bookService.queryExistBookIndexMap(needUpdateBook.getId());
+                                //解析章节目录
+                                Map<Integer, List> indexAndContentList = CrawlParser.parseBookIndexAndContent(needUpdateBook.getCrawlBookId(), book, ruleBean, existBookIndexMap);
+                                bookService.updateBookAndIndexAndContent(book, (List<BookIndex>) indexAndContentList.get(CrawlParser.BOOK_INDEX_LIST_KEY), (List<BookContent>) indexAndContentList.get(CrawlParser.BOOK_CONTENT_LIST_KEY), existBookIndexMap);
+                            } catch (Exception e) {
+                                log.error(e.getMessage(), e);
+                            }
+
                         }
 
+                        Thread.sleep(1000 * 60 * 10);
+                    } catch (Exception e) {
+                        log.error(e.getMessage(), e);
                     }
 
-                    Thread.sleep(1000 * 60 * 10);
-                } catch (Exception e) {
-                    log.error(e.getMessage(), e);
                 }
-
-            }
-        }).start();
+            }).start();
+        }
     }
 }
diff --git a/novel-crawl/src/main/java/com/java2nb/novel/service/impl/BookServiceImpl.java b/novel-crawl/src/main/java/com/java2nb/novel/service/impl/BookServiceImpl.java
index a8a34e5..02a627a 100644
--- a/novel-crawl/src/main/java/com/java2nb/novel/service/impl/BookServiceImpl.java
+++ b/novel-crawl/src/main/java/com/java2nb/novel/service/impl/BookServiceImpl.java
@@ -180,10 +180,6 @@ public class BookServiceImpl implements BookService {
         if(Constants.VISIT_COUNT_DEFAULT.equals(book.getVisitCount())) {
             book.setVisitCount(null);
         }
-        if(book.getPicUrl()!=null && book.getPicUrl().startsWith(Constants.LOCAL_PIC_PREFIX)) {
-            //本地图片则不更新
-            book.setPicUrl(null);
-        }
         bookMapper.updateByPrimaryKeySelective(book);
 
     }
diff --git a/novel-crawl/src/main/resources/application.yml b/novel-crawl/src/main/resources/application.yml
index c17bd85..394d285 100644
--- a/novel-crawl/src/main/resources/application.yml
+++ b/novel-crawl/src/main/resources/application.yml
@@ -1,3 +1,4 @@
+#端口号
 server:
   port: 8081
 
@@ -5,9 +6,16 @@ spring:
   profiles:
     active: dev
 
-
+#登录用户名密码
 admin:
   username: admin
   password: admin
 
+#爬虫自动更新的线程数
+#建议小说数量不多或者正在运行新书入库爬虫的情况下设置为1即可
+#随着小说数量的增多可以逐渐增加，但建议不要超出CPU的线程数
+crawl:
+  update:
+    thread: 1
+