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 f4e902ba0..b8cbedf1c 100644
--- a/app/src/main/java/io/legado/app/constant/PreferKey.kt
+++ b/app/src/main/java/io/legado/app/constant/PreferKey.kt
@@ -70,10 +70,12 @@ object PreferKey {
     const val cAccent = "colorAccent"
     const val cBackground = "colorBackground"
     const val cBBackground = "colorBottomBackground"
+    const val bgImage = "backgroundImage"
 
     const val cNPrimary = "colorPrimaryNight"
     const val cNAccent = "colorAccentNight"
     const val cNBackground = "colorBackgroundNight"
     const val cNBBackground = "colorBottomBackgroundNight"
+    const val bgImageN = "backgroundImageNight"
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/ThemeConfig.kt b/app/src/main/java/io/legado/app/help/ThemeConfig.kt
index 9de5ceade..0b0298e91 100644
--- a/app/src/main/java/io/legado/app/help/ThemeConfig.kt
+++ b/app/src/main/java/io/legado/app/help/ThemeConfig.kt
@@ -204,6 +204,7 @@ object ThemeConfig {
         var primaryColor: String,
         var accentColor: String,
         var backgroundColor: String,
+        var backgroundImage: String? = null,
         var bottomBackground: String
     )
 
diff --git a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
index 3adaa20f0..42945d48f 100644
--- a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
@@ -88,13 +88,13 @@ class OtherConfigFragment : BasePreferenceFragment(),
                 }
             PreferKey.cleanCache -> clearCache()
             PreferKey.defaultCover -> if (getPrefString(PreferKey.defaultCover).isNullOrEmpty()) {
-                selectDefaultCover()
+                selectImage(requestCodeCover)
             } else {
                 selector(items = arrayListOf("删除图片", "选择图片")) { _, i ->
                     if (i == 0) {
                         removePref(PreferKey.defaultCover)
                     } else {
-                        selectDefaultCover()
+                        selectImage(requestCodeCover)
                     }
                 }
             }
@@ -183,11 +183,12 @@ class OtherConfigFragment : BasePreferenceFragment(),
         }.show()
     }
 
-    private fun selectDefaultCover() {
+    @Suppress("SameParameterValue")
+    private fun selectImage(requestCode: Int) {
         val intent = Intent(Intent.ACTION_GET_CONTENT)
         intent.addCategory(Intent.CATEGORY_OPENABLE)
         intent.type = "image/*"
-        startActivityForResult(intent, requestCodeCover)
+        startActivityForResult(intent, requestCode)
     }
 
     private fun isProcessTextEnabled(): Boolean {
diff --git a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
index b7a29434e..dbe344a53 100644
--- a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
@@ -1,13 +1,17 @@
 package io.legado.app.ui.config
 
 import android.annotation.SuppressLint
+import android.app.Activity
+import android.content.Intent
 import android.content.SharedPreferences
+import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
 import android.view.View
+import androidx.documentfile.provider.DocumentFile
 import androidx.preference.Preference
 import io.legado.app.App
 import io.legado.app.R
@@ -19,18 +23,25 @@ import io.legado.app.databinding.DialogEditTextBinding
 import io.legado.app.help.AppConfig
 import io.legado.app.help.LauncherIconHelp
 import io.legado.app.help.ThemeConfig
+import io.legado.app.help.permission.Permissions
+import io.legado.app.help.permission.PermissionsCompat
 import io.legado.app.lib.dialogs.alert
+import io.legado.app.lib.dialogs.selector
 import io.legado.app.lib.theme.ATH
 import io.legado.app.ui.widget.number.NumberPickerDialog
 import io.legado.app.ui.widget.prefs.ColorPreference
 import io.legado.app.ui.widget.prefs.IconListPreference
 import io.legado.app.utils.*
+import java.io.File
 
 
 @Suppress("SameParameterValue")
 class ThemeConfigFragment : BasePreferenceFragment(),
     SharedPreferences.OnSharedPreferenceChangeListener {
 
+    private val requestCodeBgImage = 234
+    private val requestCodeBgImageN = 342
+
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         addPreferencesFromResource(R.xml.pref_config_theme)
         if (Build.VERSION.SDK_INT < 26) {
@@ -39,6 +50,8 @@ class ThemeConfigFragment : BasePreferenceFragment(),
             }
         }
         upPreferenceSummary(PreferKey.barElevation, AppConfig.elevation.toString())
+        upPreferenceSummary(PreferKey.bgImage, getPrefString(PreferKey.bgImage))
+        upPreferenceSummary(PreferKey.bgImageN, getPrefString(PreferKey.bgImageN))
         findPreference<ColorPreference>(PreferKey.cBackground)?.let {
             it.onSaveColor = { color ->
                 if (!ColorUtils.isColorLight(color)) {
@@ -168,10 +181,39 @@ class ThemeConfigFragment : BasePreferenceFragment(),
                 }
             "themeList" -> ThemeListDialog().show(childFragmentManager, "themeList")
             "saveDayTheme", "saveNightTheme" -> saveThemeAlert(key)
+            PreferKey.bgImage -> if (getPrefString(PreferKey.bgImage).isNullOrEmpty()) {
+                selectImage(requestCodeBgImage)
+            } else {
+                selector(items = arrayListOf("删除图片", "选择图片")) { _, i ->
+                    if (i == 0) {
+                        removePref(PreferKey.bgImage)
+                    } else {
+                        selectImage(requestCodeBgImage)
+                    }
+                }
+            }
+            PreferKey.bgImageN -> if (getPrefString(PreferKey.bgImageN).isNullOrEmpty()) {
+                selectImage(requestCodeBgImageN)
+            } else {
+                selector(items = arrayListOf("删除图片", "选择图片")) { _, i ->
+                    if (i == 0) {
+                        removePref(PreferKey.bgImageN)
+                    } else {
+                        selectImage(requestCodeBgImageN)
+                    }
+                }
+            }
         }
         return super.onPreferenceTreeClick(preference)
     }
 
+    private fun selectImage(requestCode: Int) {
+        val intent = Intent(Intent.ACTION_GET_CONTENT)
+        intent.addCategory(Intent.CATEGORY_OPENABLE)
+        intent.type = "image/*"
+        startActivityForResult(intent, requestCode)
+    }
+
     @SuppressLint("InflateParams")
     private fun saveThemeAlert(key: String) {
         alert(R.string.theme_name) {
@@ -211,6 +253,61 @@ class ThemeConfigFragment : BasePreferenceFragment(),
         when (preferenceKey) {
             PreferKey.barElevation -> preference.summary =
                 getString(R.string.bar_elevation_s, value)
+            else -> preference.summary = value
+        }
+    }
+
+    private fun setBgFromUri(uri: Uri, preferenceKey: String) {
+        if (uri.isContentScheme()) {
+            val doc = DocumentFile.fromSingleUri(requireContext(), uri)
+            doc?.name?.let {
+                var file = requireContext().externalFilesDir
+                file = FileUtils.createFileIfNotExist(file, preferenceKey, it)
+                kotlin.runCatching {
+                    DocumentUtils.readBytes(requireContext(), doc.uri)
+                }.getOrNull()?.let { byteArray ->
+                    file.writeBytes(byteArray)
+                    putPrefString(preferenceKey, file.absolutePath)
+
+                } ?: toast("获取文件出错")
+            }
+        } else {
+            PermissionsCompat.Builder(this)
+                .addPermissions(
+                    Permissions.READ_EXTERNAL_STORAGE,
+                    Permissions.WRITE_EXTERNAL_STORAGE
+                )
+                .rationale(R.string.bg_image_per)
+                .onGranted {
+                    RealPathUtil.getPath(requireContext(), uri)?.let { path ->
+                        val imgFile = File(path)
+                        if (imgFile.exists()) {
+                            var file = requireContext().externalFilesDir
+                            file = FileUtils.createFileIfNotExist(file, preferenceKey, imgFile.name)
+                            file.writeBytes(imgFile.readBytes())
+                            putPrefString(preferenceKey, file.absolutePath)
+
+                        }
+                    }
+                }
+                .request()
         }
     }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        when (requestCode) {
+            requestCodeBgImage -> if (resultCode == Activity.RESULT_OK) {
+                data?.data?.let { uri ->
+                    setBgFromUri(uri, PreferKey.bgImage)
+                }
+            }
+            requestCodeBgImageN -> if (resultCode == Activity.RESULT_OK) {
+                data?.data?.let { uri ->
+                    setBgFromUri(uri, PreferKey.bgImageN)
+                }
+            }
+        }
+    }
+
 }
\ No newline at end of file
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 3192e781d..e4336c98a 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -800,5 +800,6 @@
     <string name="pre_download">预下载</string>
     <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>
 
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 836f1c4de..73f4ea493 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -804,5 +804,6 @@
     <string name="pre_download">预下载</string>
     <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>
 
 </resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index ad6bfbce7..6ff4b0be6 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -804,5 +804,6 @@
     <string name="pre_download">预下载</string>
     <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>
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c38246704..2472dbe3c 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -807,5 +807,6 @@
     <string name="pre_download">预下载</string>
     <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>
 
 </resources>
diff --git a/app/src/main/res/xml/pref_config_theme.xml b/app/src/main/res/xml/pref_config_theme.xml
index 081c49b37..f5aae055a 100644
--- a/app/src/main/res/xml/pref_config_theme.xml
+++ b/app/src/main/res/xml/pref_config_theme.xml
@@ -72,6 +72,10 @@
             app:cpv_dialogType="preset"
             app:iconSpaceReserved="false" />
 
+        <io.legado.app.ui.widget.prefs.Preference
+            android:key="backgroundImage"
+            android:title="@string/background_image" />
+
         <io.legado.app.ui.widget.prefs.ColorPreference
             android:defaultValue="@color/md_grey_200"
             android:key="colorBottomBackground"
@@ -123,6 +127,10 @@
             app:cpv_dialogType="preset"
             app:iconSpaceReserved="false" />
 
+        <io.legado.app.ui.widget.prefs.Preference
+            android:key="backgroundImageNight"
+            android:title="@string/background_image" />
+
         <io.legado.app.ui.widget.prefs.ColorPreference
             android:defaultValue="@color/md_grey_800"
             android:key="colorBottomBackgroundNight"