diff --git a/app/src/main/java/io/legado/app/constant/PreferKey.kt b/app/src/main/java/io/legado/app/constant/PreferKey.kt
index 1d25c5607..9b2de36ba 100644
--- a/app/src/main/java/io/legado/app/constant/PreferKey.kt
+++ b/app/src/main/java/io/legado/app/constant/PreferKey.kt
@@ -67,6 +67,7 @@ object PreferKey {
     const val preDownload = "preDownload"
     const val autoRefresh = "auto_refresh"
     const val defaultToRead = "defaultToRead"
+    const val exportCharset = "exportCharset"
 
     const val cPrimary = "colorPrimary"
     const val cAccent = "colorAccent"
diff --git a/app/src/main/java/io/legado/app/help/AppConfig.kt b/app/src/main/java/io/legado/app/help/AppConfig.kt
index 81441ea2d..fef5a084d 100644
--- a/app/src/main/java/io/legado/app/help/AppConfig.kt
+++ b/app/src/main/java/io/legado/app/help/AppConfig.kt
@@ -137,6 +137,18 @@ object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
             context.putPrefInt(PreferKey.barElevation, value)
         }
 
+    var exportCharset: String
+        get() {
+            val c = context.getPrefString(PreferKey.exportCharset)
+            if (c.isNullOrBlank()) {
+                return "UTF-8"
+            }
+            return c
+        }
+        set(value) {
+            context.putPrefString(PreferKey.exportCharset, value)
+        }
+
     val autoChangeSource: Boolean
         get() = context.getPrefBoolean(PreferKey.autoChangeSource, true)
 
diff --git a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt b/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
index f77daa7d2..90469aadd 100644
--- a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
@@ -19,7 +19,10 @@ import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.data.entities.BookGroup
 import io.legado.app.databinding.ActivityCacheBookBinding
+import io.legado.app.databinding.DialogEditTextBinding
+import io.legado.app.help.AppConfig
 import io.legado.app.help.BookHelp
+import io.legado.app.lib.dialogs.alert
 import io.legado.app.service.help.CacheBook
 import io.legado.app.ui.filepicker.FilePicker
 import io.legado.app.ui.filepicker.FilePickerDialog
@@ -96,6 +99,12 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
                 } else {
                     CacheBook.stop(this@CacheActivity)
                 }
+            }
+            R.id.menu_export_folder -> {
+
+            }
+            R.id.menu_export_charset -> {
+
             }
             R.id.menu_log -> {
                 TextListDialog.show(supportFragmentManager, getString(R.string.log), CacheBook.logs)
@@ -209,6 +218,22 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
         }
     }
 
+    private fun showCharsetConfig() {
+        val charsets =
+            arrayListOf("UTF-8", "GB2312", "GBK", "Unicode", "UTF-16", "UTF-16LE", "ASCII")
+        alert(R.string.set_charset) {
+            val alertBinding = DialogEditTextBinding.inflate(layoutInflater).apply {
+                editView.setFilterValues(charsets)
+                editView.setText(AppConfig.exportCharset)
+            }
+            customView { alertBinding.root }
+            okButton {
+                AppConfig.exportCharset = alertBinding.editView.text?.toString() ?: "UTF-8"
+            }
+            cancelButton()
+        }.show()
+    }
+
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         when (requestCode) {
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
index eb256ae8a..a869d016e 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
@@ -221,7 +221,6 @@ abstract class ReadBookBaseActivity :
         }.show().requestInputMethod()
     }
 
-    @SuppressLint("InflateParams")
     fun showCharsetConfig() {
         val charsets =
             arrayListOf("UTF-8", "GB2312", "GBK", "Unicode", "UTF-16", "UTF-16LE", "ASCII")
diff --git a/app/src/main/res/menu/book_cache.xml b/app/src/main/res/menu/book_cache.xml
index 689fc54ae..6ceebce28 100644
--- a/app/src/main/res/menu/book_cache.xml
+++ b/app/src/main/res/menu/book_cache.xml
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:tools="http://schemas.android.com/tools"
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    tools:ignore="AlwaysShowAction">
 
     <item
         android:id="@+id/menu_download"
         android:title="@string/action_download"
         android:icon="@drawable/ic_play_24dp"
-        app:showAsAction="always"
-        tools:ignore="AlwaysShowAction" />
+        app:showAsAction="always" />
 
     <item
         android:id="@+id/menu_book_group"
@@ -20,6 +20,16 @@
 
     </item>
 
+    <item
+        android:id="@+id/menu_export_folder"
+        android:title="@string/export_folder"
+        app:showAsAction="never" />
+
+    <item
+        android:id="@+id/menu_export_charset"
+        android:title="@string/export_charset"
+        app:showAsAction="never" />
+
     <item
         android:id="@+id/menu_log"
         android:title="@string/log"
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 2f9956a23..8dffe0508 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -801,5 +801,7 @@
     <string name="pre_download_s">预先下载10章正文</string>
     <string name="sort_enable">启用排序</string>
     <string name="background_image">背景图片</string>
+    <string name="export_folder">导出文件夹</string>
+    <string name="export_charset">导出编码</string>
 
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 33f623d32..214d4f5c8 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -805,5 +805,7 @@
     <string name="pre_download_s">预先下载10章正文</string>
     <string name="sort_enable">启用排序</string>
     <string name="background_image">背景图片</string>
+    <string name="export_folder">导出文件夹</string>
+    <string name="export_charset">导出编码</string>
 
 </resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index a4f670bc6..a50882b00 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -805,5 +805,7 @@
     <string name="pre_download_s">预先下载10章正文</string>
     <string name="sort_enable">启用排序</string>
     <string name="background_image">背景图片</string>
+    <string name="export_folder">导出文件夹</string>
+    <string name="export_charset">导出编码</string>
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b2ba15475..37d94f288 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -808,5 +808,7 @@
     <string name="pre_download_s">预先下载10章正文</string>
     <string name="sort_enable">启用排序</string>
     <string name="background_image">背景图片</string>
+    <string name="export_folder">导出文件夹</string>
+    <string name="export_charset">导出编码</string>
 
 </resources>