diff --git a/app/src/main/java/io/legado/app/ui/main/booksource/BookSourceAdapter.kt b/app/src/main/java/io/legado/app/ui/main/booksource/BookSourceAdapter.kt
index 84fad112c..1fb30b6e5 100644
--- a/app/src/main/java/io/legado/app/ui/main/booksource/BookSourceAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/main/booksource/BookSourceAdapter.kt
@@ -5,6 +5,7 @@ import android.view.Menu
 import android.view.View
 import android.view.ViewGroup
 import android.widget.PopupMenu
+import androidx.paging.PagedList
 import androidx.paging.PagedListAdapter
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.RecyclerView
@@ -33,7 +34,7 @@ class BookSourceAdapter : PagedListAdapter<BookSource, BookSourceAdapter.MyViewH
     }
 
     var callBack: CallBack? = null
-    val checkedList = HashSet<String>()
+    private val checkedList = HashSet<String>()
 
     val itemTouchCallbackListener = object : OnItemTouchCallbackListener {
         override fun onSwiped(adapterPosition: Int) {
@@ -56,6 +57,25 @@ class BookSourceAdapter : PagedListAdapter<BookSource, BookSourceAdapter.MyViewH
         }
     }
 
+    fun selectAll() {
+        currentList?.let {
+            if (checkedList.size == it.size) {
+                checkedList.clear()
+                notifyDataSetChanged()
+            } else {
+                for (item in it) {
+                    item?.let { checkedList.add(item.origin) }
+                }
+                notifyDataSetChanged()
+            }
+        }
+    }
+
+    override fun onCurrentListChanged(previousList: PagedList<BookSource>?, currentList: PagedList<BookSource>?) {
+        super.onCurrentListChanged(previousList, currentList)
+        callBack?.upCount(itemCount)
+    }
+
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
         return MyViewHolder(LayoutInflater.from(parent.context).inflate(R.layout.item_book_source, parent, false))
     }
@@ -116,6 +136,7 @@ class BookSourceAdapter : PagedListAdapter<BookSource, BookSourceAdapter.MyViewH
     }
 
     interface CallBack {
+        fun upCount(count: Int)
         fun del(bookSource: BookSource)
         fun edit(bookSource: BookSource)
         fun update(bookSource: BookSource)
diff --git a/app/src/main/java/io/legado/app/ui/main/booksource/BookSourceFragment.kt b/app/src/main/java/io/legado/app/ui/main/booksource/BookSourceFragment.kt
index b07dc48d9..fe9f2f261 100644
--- a/app/src/main/java/io/legado/app/ui/main/booksource/BookSourceFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/main/booksource/BookSourceFragment.kt
@@ -50,6 +50,7 @@ class BookSourceFragment : BaseFragment(R.layout.fragment_book_source), BookSour
             R.id.action_import_book_source_qr -> {
                 context?.startActivity<QrCodeActivity>()
             }
+            R.id.action_select_all -> adapter.selectAll()
         }
     }
 
@@ -98,6 +99,10 @@ class BookSourceFragment : BaseFragment(R.layout.fragment_book_source), BookSour
         return false
     }
 
+    override fun upCount(count: Int) {
+        search_view.queryHint = getString(R.string.search_book_source_num, count)
+    }
+
     override fun del(bookSource: BookSource) {
         launch(IO) { App.db.bookSourceDao().delete(bookSource) }
     }