diff --git a/app/src/main/assets/updatelog.fy b/app/src/main/assets/updatelog.fy
index 2b1fad5..28404c8 100644
--- a/app/src/main/assets/updatelog.fy
+++ b/app/src/main/assets/updatelog.fy
@@ -1,10 +1,11 @@
 风月读书v2.4.5
 更新内容：
-1、修复书籍无法导出缓存的问题
-2、修复部分书源bug
-3、修复同名书籍详情页加载bug
-4、修复搜索时当前分组不存在时无法搜索的问题
-5、Cookie支持备份&恢复
+1、新增部分提示
+2、修复书籍无法导出缓存的问题
+3、修复部分书源bug
+4、修复同名书籍详情页加载bug
+5、修复搜索时当前分组不存在时无法搜索的问题
+6、Cookie支持备份&恢复
 
 2022.04.24
 风月读书v2.4.4
diff --git a/app/src/main/java/xyz/fycz/myreader/ui/activity/ReadActivity.java b/app/src/main/java/xyz/fycz/myreader/ui/activity/ReadActivity.java
index 7bb29d3..26a6f60 100644
--- a/app/src/main/java/xyz/fycz/myreader/ui/activity/ReadActivity.java
+++ b/app/src/main/java/xyz/fycz/myreader/ui/activity/ReadActivity.java
@@ -140,6 +140,7 @@ import xyz.fycz.myreader.widget.page.TxtChar;
 import static android.view.View.GONE;
 import static android.view.View.VISIBLE;
 import static xyz.fycz.myreader.util.UriFileUtil.getPath;
+import static xyz.fycz.myreader.widget.page.PageMode.SCROLL;
 
 /**
  * @author fengyue
@@ -392,7 +393,7 @@ public class ReadActivity extends BaseActivity<ActivityReadBinding> implements C
 
             @Override
             public void onLongPress() {
-                if (mSetting.getPageMode() == PageMode.SCROLL){
+                if (mSetting.getPageMode() == SCROLL){
                     ToastUtils.showWarring("滚动模式暂不支持长按复制");
                     return;
                 }
@@ -515,7 +516,7 @@ public class ReadActivity extends BaseActivity<ActivityReadBinding> implements C
         });
 
         binding.readTvListenBook.setOnClickListener(v -> {
-            if (mSetting.getPageMode() == PageMode.SCROLL) {
+            if (mSetting.getPageMode() == SCROLL) {
                 ToastUtils.showWarring("朗读暂不支持滚动翻页模式!");
                 return;
             }
@@ -1274,6 +1275,10 @@ public class ReadActivity extends BaseActivity<ActivityReadBinding> implements C
             @Override
             public void onPageModeChange() {
                 mPageLoader.setPageMode(mSetting.getPageMode());
+                if (mSetting.getPageMode().equals(SCROLL)){
+                    DialogCreator.createTipDialog(ReadActivity.this,
+                            "滚动模式存在大量问题，不建议使用；且作者本人不使用此模式，大概率不会进行修复/优化，也不接受此模式的问题反馈");
+                }
             }
 
             @Override
diff --git a/app/src/main/java/xyz/fycz/myreader/ui/activity/SearchBookActivity.java b/app/src/main/java/xyz/fycz/myreader/ui/activity/SearchBookActivity.java
index d3eb4e1..18cb0de 100644
--- a/app/src/main/java/xyz/fycz/myreader/ui/activity/SearchBookActivity.java
+++ b/app/src/main/java/xyz/fycz/myreader/ui/activity/SearchBookActivity.java
@@ -105,8 +105,6 @@ public class SearchBookActivity extends BaseActivity<ActivitySearchBookBinding>
 
     private SearchHistoryService mSearchHistoryService;
 
-    private int allThreadCount;
-
     private SearchEngine searchEngine;
 
     private Setting mSetting;
@@ -751,8 +749,7 @@ public class SearchBookActivity extends BaseActivity<ActivitySearchBookBinding>
         initSearchList();
         List<ReadCrawler> readCrawlers = ReadCrawlerUtil
                 .getEnableReadCrawlers(SharedPreUtils.getInstance().getString("searchGroup"));
-        allThreadCount = readCrawlers.size();
-        if (allThreadCount == 0) {
+        if (readCrawlers.size() == 0) {
             ToastUtils.showWarring("当前书源已全部禁用，无法搜索！");
             binding.rpb.setIsAutoLoading(false);
             return;
@@ -760,8 +757,28 @@ public class SearchBookActivity extends BaseActivity<ActivitySearchBookBinding>
         /*for (ReadCrawler readCrawler : readCrawlers) {
             searchBookByCrawler(readCrawler, readCrawler.getSearchCharset());
         }*/
-        searchEngine.initSearchEngine(readCrawlers);
-        searchEngine.search(searchKey);
+        if (readCrawlers.size() > 2000 && !SharedPreUtils.getInstance().getBoolean("searchBookWarning")) {
+            DialogCreator.createThreeButtonDialog(this, "书源过多警告",
+                    "当前搜索书源数量超过2000(建议1000以内)，继续搜索可能会导致软件异常(如搜索时前往阅读页返回后将会导致卡死黑屏)，确定要继续搜索吗？",
+                    true, "继续搜索并不再提示", "书源管理", "继续搜索",
+                    (dialog, which) -> {
+                        SharedPreUtils.getInstance().putBoolean("searchBookWarning", true);
+                        searchEngine.initSearchEngine(readCrawlers);
+                        searchEngine.search(searchKey);
+                    }, (dialog, which) -> {
+                        startActivityForResult(new Intent(this, BookSourceActivity.class),
+                                APPCONST.REQUEST_BOOK_SOURCE);
+                    },
+                    (dialog, which) -> {
+                        searchEngine.initSearchEngine(readCrawlers);
+                        searchEngine.search(searchKey);
+                    }
+            );
+        } else {
+            searchEngine.initSearchEngine(readCrawlers);
+            searchEngine.search(searchKey);
+        }
+
     }
 
     /**