diff --git a/app/src/main/java/io/legado/app/help/CrashHandler.kt b/app/src/main/java/io/legado/app/help/CrashHandler.kt
index 684bac9d4..ea5d6fa47 100644
--- a/app/src/main/java/io/legado/app/help/CrashHandler.kt
+++ b/app/src/main/java/io/legado/app/help/CrashHandler.kt
@@ -2,14 +2,14 @@ package io.legado.app.help
 
 import android.annotation.SuppressLint
 import android.content.Context
+import android.net.Uri
 import android.os.Build
 import android.webkit.WebSettings
 import io.legado.app.constant.AppConst
+import io.legado.app.exception.NoStackTraceException
+import io.legado.app.help.config.AppConfig
 import io.legado.app.model.ReadAloud
-import io.legado.app.utils.FileUtils
-import io.legado.app.utils.getFile
-import io.legado.app.utils.longToastOnUi
-import io.legado.app.utils.stackTraceStr
+import io.legado.app.utils.*
 import splitties.init.appCtx
 import java.io.PrintWriter
 import java.io.StringWriter
@@ -105,14 +105,25 @@ class CrashHandler(val context: Context) : Thread.UncaughtExceptionHandler {
             val timestamp = System.currentTimeMillis()
             val time = format.format(Date())
             val fileName = "crash-$time-$timestamp.log"
-            appCtx.externalCacheDir?.let { rootFile ->
-                rootFile.getFile("crash").listFiles()?.forEach {
-                    if (it.lastModified() < System.currentTimeMillis() - TimeUnit.DAYS.toMillis(7)) {
-                        it.delete()
-                    }
-                }
-                FileUtils.createFileIfNotExist(rootFile, "crash", fileName)
+            try {
+                val backupPath = AppConfig.backupPath ?: throw NoStackTraceException("备份路径未配置")
+                val uri = Uri.parse(backupPath)
+                val fileDoc = FileDoc.fromUri(uri, true)
+                fileDoc.createFileIfNotExist(fileName, "crash")
                     .writeText(sb.toString())
+            } catch (e: Exception) {
+                appCtx.externalCacheDir?.let { rootFile ->
+                    rootFile.getFile("crash").listFiles()?.forEach {
+                        if (it.lastModified() < System.currentTimeMillis() - TimeUnit.DAYS.toMillis(
+                                7
+                            )
+                        ) {
+                            it.delete()
+                        }
+                    }
+                    FileUtils.createFileIfNotExist(rootFile, "crash", fileName)
+                        .writeText(sb.toString())
+                }
             }
         }
 
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 c2b93c61c..827e6c5c2 100644
--- a/app/src/main/java/io/legado/app/utils/DocumentUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/DocumentUtils.kt
@@ -18,11 +18,10 @@ object DocumentUtils {
     fun createFileIfNotExist(
         root: DocumentFile,
         fileName: String,
-        mimeType: String = "",
         vararg subDirs: String
     ): DocumentFile? {
         val parent: DocumentFile? = createFolderIfNotExist(root, *subDirs)
-        return parent?.findFile(fileName) ?: parent?.createFile(mimeType, fileName)
+        return parent?.findFile(fileName) ?: parent?.createFile("", fileName)
     }
 
     fun createFolderIfNotExist(root: DocumentFile, vararg subDirs: String): DocumentFile? {
diff --git a/app/src/main/java/io/legado/app/utils/FileDocExtensions.kt b/app/src/main/java/io/legado/app/utils/FileDocExtensions.kt
index 95f66f8a5..cb38903a3 100644
--- a/app/src/main/java/io/legado/app/utils/FileDocExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/FileDocExtensions.kt
@@ -183,12 +183,11 @@ fun FileDoc.find(name: String, depth: Int = 0): FileDoc? {
 
 fun FileDoc.createFileIfNotExist(
     fileName: String,
-    mimeType: String = "",
     vararg subDirs: String
 ): FileDoc {
     return if (uri.isContentScheme()) {
         val documentFile = DocumentFile.fromTreeUri(appCtx, uri)!!
-        val tmp = DocumentUtils.createFileIfNotExist(documentFile, fileName, mimeType, *subDirs)!!
+        val tmp = DocumentUtils.createFileIfNotExist(documentFile, fileName, *subDirs)!!
         FileDoc.fromDocumentFile(tmp)
     } else {
         val path = FileUtils.getPath(uri.path!!, *subDirs) + File.separator + fileName
@@ -235,6 +234,14 @@ fun FileDoc.exists(): Boolean {
     }
 }
 
+fun FileDoc.writeText(text: String) {
+    if (uri.isContentScheme()) {
+        uri.writeText(appCtx, text)
+    } else {
+        File(uri.path!!).writeText(text)
+    }
+}
+
 /**
  * DocumentFile 的 listFiles() 非常的慢,尽量不要使用
  */