diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
index 82e7113a0..b19b86c91 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
@@ -12,6 +12,7 @@ import android.view.Gravity
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.documentfile.provider.DocumentFile
 import androidx.fragment.app.DialogFragment
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -20,11 +21,13 @@ import io.legado.app.R
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.constant.Bus
+import io.legado.app.help.FileHelp
 import io.legado.app.help.ImageLoader
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.help.permission.Permissions
 import io.legado.app.help.permission.PermissionsCompat
 import io.legado.app.ui.book.read.Help
+import io.legado.app.utils.DocumentUtils
 import io.legado.app.utils.FileUtils
 import io.legado.app.utils.getCompatColor
 import io.legado.app.utils.postEvent
@@ -32,6 +35,7 @@ import kotlinx.android.synthetic.main.dialog_read_bg_text.*
 import kotlinx.android.synthetic.main.item_bg_image.view.*
 import org.jetbrains.anko.sdk27.listeners.onCheckedChange
 import org.jetbrains.anko.sdk27.listeners.onClick
+import java.io.File
 
 class BgTextConfigDialog : DialogFragment() {
 
@@ -133,17 +137,10 @@ class BgTextConfigDialog : DialogFragment() {
     }
 
     private fun selectImage() {
-        PermissionsCompat.Builder(this)
-            .addPermissions(Permissions.READ_EXTERNAL_STORAGE, Permissions.WRITE_EXTERNAL_STORAGE)
-            .rationale(R.string.bg_image_per)
-            .onGranted {
-                val intent = Intent(Intent.ACTION_GET_CONTENT)
-                intent.addCategory(Intent.CATEGORY_OPENABLE)
-                intent.type = "image/*"
-                startActivityForResult(intent, resultSelectBg)
-                Unit
-            }
-            .request()
+        val intent = Intent(Intent.ACTION_GET_CONTENT)
+        intent.addCategory(Intent.CATEGORY_OPENABLE)
+        intent.type = "image/*"
+        startActivityForResult(intent, resultSelectBg)
     }
 
     class BgAdapter(context: Context) :
@@ -170,11 +167,37 @@ class BgTextConfigDialog : DialogFragment() {
         when (requestCode) {
             resultSelectBg -> {
                 if (resultCode == RESULT_OK) {
-                    data?.data?.let {
-                        FileUtils.getPath(requireContext(), it)?.let { path ->
-                            ReadBookConfig.getConfig().setBg(2, path)
-                            ReadBookConfig.upBg()
-                            postEvent(Bus.UP_CONFIG, false)
+                    data?.data?.let { uri ->
+                        if (DocumentFile.isDocumentUri(requireContext(), uri)) {
+                            val doc = DocumentFile.fromSingleUri(requireContext(), uri)
+                            doc?.let {
+                                var file = requireContext().getExternalFilesDir(null)
+                                    ?: requireContext().filesDir
+                                file =
+                                    FileHelp.getFile(file.absolutePath + File.separator + "bg" + File.separator + doc.name)
+                                DocumentUtils.readBytes(requireContext(), uri)?.let {
+                                    file.writeBytes(it)
+                                    ReadBookConfig.getConfig().setBg(2, file.absolutePath)
+                                    ReadBookConfig.upBg()
+                                    postEvent(Bus.UP_CONFIG, false)
+                                }
+                            }
+                        } else {
+                            PermissionsCompat.Builder(this)
+                                .addPermissions(
+                                    Permissions.READ_EXTERNAL_STORAGE,
+                                    Permissions.WRITE_EXTERNAL_STORAGE
+                                )
+                                .rationale(R.string.bg_image_per)
+                                .onGranted {
+                                    FileUtils.getPath(requireContext(), uri)?.let { path ->
+                                        ReadBookConfig.getConfig().setBg(2, path)
+                                        ReadBookConfig.upBg()
+                                        postEvent(Bus.UP_CONFIG, false)
+                                    }
+                                    Unit
+                                }
+                                .request()
                         }
                     }
                 }
diff --git a/app/src/main/java/io/legado/app/utils/DocumentUtils.kt b/app/src/main/java/io/legado/app/utils/DocumentUtils.kt
index dcb128a8e..3929874ef 100644
--- a/app/src/main/java/io/legado/app/utils/DocumentUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/DocumentUtils.kt
@@ -6,25 +6,24 @@ import android.net.Uri
 object DocumentUtils {
 
     @JvmStatic
+    @Throws(Exception::class)
     fun writeText(context: Context, data: String, fileUri: Uri): Boolean {
         return writeBytes(context, data.toByteArray(), fileUri)
     }
 
     @JvmStatic
+    @Throws(Exception::class)
     fun writeBytes(context: Context, data: ByteArray, fileUri: Uri): Boolean {
-        try {
-            context.contentResolver.openOutputStream(fileUri)?.let {
-                it.write(data)
-                it.close()
-                return true
-            }
-        } catch (e: java.lang.Exception) {
-            e.printStackTrace()
+        context.contentResolver.openOutputStream(fileUri)?.let {
+            it.write(data)
+            it.close()
+            return true
         }
         return false
     }
 
     @JvmStatic
+    @Throws(Exception::class)
     fun readText(context: Context, uri: Uri): String? {
         readBytes(context, uri)?.let {
             return String(it)
@@ -33,17 +32,14 @@ object DocumentUtils {
     }
 
     @JvmStatic
+    @Throws(Exception::class)
     fun readBytes(context: Context, uri: Uri): ByteArray? {
-        try {
-            context.contentResolver.openInputStream(uri)?.let {
-                val len: Int = it.available()
-                val buffer = ByteArray(len)
-                it.read(buffer)
-                it.close()
-                return buffer
-            }
-        } catch (e: Exception) {
-            e.printStackTrace()
+        context.contentResolver.openInputStream(uri)?.let {
+            val len: Int = it.available()
+            val buffer = ByteArray(len)
+            it.read(buffer)
+            it.close()
+            return buffer
         }
         return null
     }