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 2ad61a9b5..8acc883ee 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
@@ -193,7 +193,7 @@ class BgTextConfigDialog : DialogFragment() {
                                 )
                                 .rationale(R.string.bg_image_per)
                                 .onGranted {
-                                    FileUtils.getPath(requireContext(), uri)?.let { path ->
+                                    FileUtils.getRealPath(requireContext(), uri)?.let { path ->
                                         ReadBookConfig.getConfig().setBg(2, path)
                                         ReadBookConfig.upBg()
                                         postEvent(EventBus.UP_CONFIG, false)
diff --git a/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt b/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
index b84cc3f6f..c9e4d4bd2 100644
--- a/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
@@ -98,7 +98,7 @@ class QrCodeActivity : BaseActivity(R.layout.activity_qrcode_capture), QRCodeVie
             zxingview.startSpotAndShowRect() // 显示扫描框，并开始识别
 
             if (resultCode == Activity.RESULT_OK && requestCode == requestQrImage) {
-                val picturePath = FileUtils.getPath(this, it)
+                val picturePath = FileUtils.getRealPath(this, it)
                 // 本来就用到 QRCodeView 时可直接调 QRCodeView 的方法，走通用的回调
                 zxingview.decodeQRCode(picturePath)
             }
diff --git a/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt b/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
index a129ae47c..636aa8a32 100644
--- a/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
@@ -38,8 +38,9 @@ class FontSelectDialog : DialogFragment(),
     private val fontFolderRequestCode = 35485
     private val fontFolder =
         App.INSTANCE.filesDir.absolutePath + File.separator + "Fonts" + File.separator
-    private val fontCacheFolder =
-        App.INSTANCE.cacheDir.absolutePath + File.separator + "Fonts" + File.separator
+    private val fontCacheFolder by lazy {
+        FileUtils.createFolderIfNotExist(App.INSTANCE.cacheDir, "Fonts")
+    }
     override val coroutineContext: CoroutineContext
         get() = job + Main
     private var adapter: FontAdapter? = null
@@ -122,18 +123,31 @@ class FontSelectDialog : DialogFragment(),
     @SuppressLint("DefaultLocale")
     private fun getFontFiles(uri: Uri) {
         launch(IO) {
-            FileUtils.deleteFile(fontCacheFolder)
-            DocumentUtils.listFiles(App.INSTANCE, uri).forEach { item ->
+            val docItems = DocumentUtils.listFiles(App.INSTANCE, uri)
+            fontCacheFolder.listFiles()?.forEach { fontFile ->
+                var contain = false
+                for (item in docItems) {
+                    if (fontFile.name == item.name) {
+                        contain = true
+                        break
+                    }
+                }
+                if (!contain) {
+                    fontFile.delete()
+                }
+            }
+            docItems.forEach { item ->
                 if (item.name.toLowerCase().matches(".*\\.[ot]tf".toRegex())) {
-                    DocumentUtils.readBytes(App.INSTANCE, item.uri)?.let { byteArray ->
-                        FileUtils.createFileIfNotExist(fontCacheFolder + item.name)
-                            .writeBytes(byteArray)
+                    val fontFile = FileUtils.getFile(fontCacheFolder, item.name)
+                    if (!fontFile.exists()) {
+                        DocumentUtils.readBytes(App.INSTANCE, item.uri)?.let { byteArray ->
+                            fontFile.writeBytes(byteArray)
+                        }
                     }
                 }
             }
             try {
-                val file = File(fontCacheFolder)
-                file.listFiles { pathName ->
+                fontCacheFolder.listFiles { pathName ->
                     pathName.name.toLowerCase().matches(".*\\.[ot]tf".toRegex())
                 }?.let {
                     withContext(Main) {
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 2adfcddf4..e10cd8ccf 100644
--- a/app/src/main/java/io/legado/app/utils/DocumentUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/DocumentUtils.kt
@@ -85,12 +85,12 @@ object DocumentUtils {
 
     fun listFiles(context: Context, uri: Uri): ArrayList<DocItem> {
         val docList = arrayListOf<DocItem>()
-        val childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(
-            uri,
-            DocumentsContract.getDocumentId(uri)
-        )
         var c: Cursor? = null
         try {
+            val childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(
+                uri,
+                DocumentsContract.getDocumentId(uri)
+            )
             c = context.contentResolver.query(
                 childrenUri, arrayOf(
                     DocumentsContract.Document.COLUMN_DOCUMENT_ID,
@@ -118,7 +118,8 @@ object DocumentUtils {
                     docList.add(item)
                 } while (c.moveToNext())
             }
-        } catch (e: java.lang.Exception) {
+        } catch (e: Exception) {
+            e.printStackTrace()
         } finally {
             c?.close()
         }
diff --git a/app/src/main/java/io/legado/app/utils/FileUtils.kt b/app/src/main/java/io/legado/app/utils/FileUtils.kt
index 59b5c4d24..c01eff00d 100644
--- a/app/src/main/java/io/legado/app/utils/FileUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/FileUtils.kt
@@ -105,7 +105,7 @@ object FileUtils {
         return sdCardDirectory
     }
 
-    fun getPath(context: Context, uri: Uri): String? {
+    fun getRealPath(context: Context, uri: Uri): String? {
         // DocumentProvider
         if (DocumentsContract.isDocumentUri(context, uri)) {
             // ExternalStorageProvider
diff --git a/app/src/main/java/io/legado/app/utils/UriExtensions.kt b/app/src/main/java/io/legado/app/utils/UriExtensions.kt
index 4062c74df..cd3056941 100644
--- a/app/src/main/java/io/legado/app/utils/UriExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/UriExtensions.kt
@@ -10,7 +10,7 @@ fun Uri.readBytes(context: Context): ByteArray? {
     if (DocumentFile.isDocumentUri(context, this)) {
         return DocumentUtils.readBytes(context, this)
     } else {
-        val path = FileUtils.getPath(context, this)
+        val path = FileUtils.getRealPath(context, this)
         if (path?.isNotEmpty() == true) {
             return File(path).readBytes()
         }
@@ -23,7 +23,7 @@ fun Uri.readText(context: Context): String? {
     if (DocumentFile.isDocumentUri(context, this)) {
         return DocumentUtils.readText(context, this)
     } else {
-        val path = FileUtils.getPath(context, this)
+        val path = FileUtils.getRealPath(context, this)
         if (path?.isNotEmpty() == true) {
             return File(path).readText()
         }
@@ -36,7 +36,7 @@ fun Uri.writeBytes(context: Context, byteArray: ByteArray): Boolean {
     if (DocumentFile.isDocumentUri(context, this)) {
         return DocumentUtils.writeBytes(context, byteArray, this)
     } else {
-        val path = FileUtils.getPath(context, this)
+        val path = FileUtils.getRealPath(context, this)
         if (path?.isNotEmpty() == true) {
             File(path).writeBytes(byteArray)
             return true
@@ -50,7 +50,7 @@ fun Uri.writeText(context: Context, text: String): Boolean {
     if (DocumentFile.isDocumentUri(context, this)) {
         return DocumentUtils.writeText(context, text, this)
     } else {
-        val path = FileUtils.getPath(context, this)
+        val path = FileUtils.getRealPath(context, this)
         if (path?.isNotEmpty() == true) {
             File(path).writeText(text)
             return true