diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index 186c29916..5a61a7d4e 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -3,8 +3,9 @@
 * 关注合作公众号 **[小说拾遗]** 获取好看的小说。
 * 旧版数据导入教程：先在旧版阅读(2.x)中进行备份，然后在新版阅读(3.x)【我的】->【备份与恢复】，选择【导入旧版本数据】。
 
-**2020/01/01**
+**2020/01/03**
 * 导出书单只保留书名与作者,导入时自动查找可用源
+* 添加预加载设置
 
 **2020/12/30**
 * 解决文件下载异常，在线语音可正常播放 by [Celeter](https://github.com/Celeter)
diff --git a/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt b/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
index e7ffc7fe0..560a92a76 100644
--- a/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
+++ b/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
@@ -14,6 +14,9 @@ interface BookSourceDao {
     @Query("select * from book_sources where bookSourceName like :searchKey or bookSourceGroup like :searchKey or bookSourceUrl like :searchKey  or bookSourceComment like :searchKey order by customOrder asc")
     fun liveDataSearch(searchKey: String = ""): LiveData<List<BookSource>>
 
+    @Query("select * from book_sources where bookSourceGroup like :searchKey order by customOrder asc")
+    fun liveDataGroupSearch(searchKey: String = ""): LiveData<List<BookSource>>
+
     @Query("select * from book_sources where enabled = 1 order by customOrder asc")
     fun liveDataEnabled(): LiveData<List<BookSource>>
 
diff --git a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
index 38c138482..0aeceded0 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
@@ -139,7 +139,7 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
             R.id.menu_help -> showHelp()
         }
         if (item.groupId == R.id.source_group) {
-            searchView.setQuery(item.title, true)
+            searchView.setQuery("group:${item.title}", true)
         }
         return super.onCompatOptionsItemSelected(item)
     }
@@ -180,6 +180,10 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
             searchKey == getString(R.string.disabled) -> {
                 App.db.bookSourceDao.liveDataDisabled()
             }
+            searchKey.startsWith("group:") -> {
+                val key = searchKey.substringAfter("group:")
+                App.db.bookSourceDao.liveDataGroupSearch("%$key%")
+            }
             else -> {
                 App.db.bookSourceDao.liveDataSearch("%$searchKey%")
             }