diff --git a/app/src/main/java/io/legado/app/data/AppDatabase.kt b/app/src/main/java/io/legado/app/data/AppDatabase.kt
index 5fdff03e0..d58a5ccb7 100644
--- a/app/src/main/java/io/legado/app/data/AppDatabase.kt
+++ b/app/src/main/java/io/legado/app/data/AppDatabase.kt
@@ -57,4 +57,5 @@ abstract class AppDatabase : RoomDatabase() {
     abstract fun searchKeywordDao(): SearchKeywordDao
     abstract fun sourceCookieDao(): SourceCookieDao
     abstract fun rssSourceDao(): RssSourceDao
+    abstract fun bookmarkDao(): BookmarkDao
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/dao/BookmarkDao.kt b/app/src/main/java/io/legado/app/data/dao/BookmarkDao.kt
new file mode 100644
index 000000000..eb757c547
--- /dev/null
+++ b/app/src/main/java/io/legado/app/data/dao/BookmarkDao.kt
@@ -0,0 +1,18 @@
+package io.legado.app.data.dao
+
+import androidx.paging.DataSource
+import androidx.room.Dao
+import androidx.room.Query
+import io.legado.app.data.entities.Bookmark
+
+
+@Dao
+interface BookmarkDao {
+
+    @Query("select * from bookmarks")
+    fun all(): List<Bookmark>
+
+    @Query("select * from bookmarks where bookUrl = :bookUrl")
+    fun observeByBook(bookUrl: String): DataSource.Factory<Int, Bookmark>
+
+}
\ No newline at end of file