diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index d8f361f4b..3896502be 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -11,6 +11,11 @@
 * 正文出现缺字漏字、内容缺失、排版错乱等情况，有可能是净化规则或简繁转换出现问题。
 * 漫画源看书显示乱码，**阅读与其他软件的源并不通用**，请导入阅读的支持的漫画源！
 
+**2021/01/01**
+
+* 修复本地txt问题,不在拷贝到私有目录,可以正常打开
+* 优化txt目录识别,取目录数量最多的规则
+
 **2021/12/28**
 
 * 用阅读打开本地朗读引擎文件和主体配置文件也可以导入
diff --git a/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt b/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
index 1c15e6fd9..873bb4470 100644
--- a/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
@@ -2,12 +2,13 @@ package io.legado.app.model.localBook
 
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
-import android.net.Uri
 import android.text.TextUtils
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
-import io.legado.app.help.BookHelp
-import io.legado.app.utils.*
+import io.legado.app.utils.FileUtils
+import io.legado.app.utils.HtmlFormatter
+import io.legado.app.utils.MD5Utils
+import io.legado.app.utils.externalFiles
 import me.ag2s.epublib.domain.EpubBook
 import me.ag2s.epublib.domain.Resource
 import me.ag2s.epublib.domain.TOCReference
@@ -23,36 +24,14 @@ import java.io.IOException
 import java.io.InputStream
 import java.nio.charset.Charset
 import java.util.*
-import java.util.zip.ZipFile
 
 class EpubFile(var book: Book) {
 
     companion object {
         private var eFile: EpubFile? = null
 
-        fun getFile(book: Book): File {
-            val file = BookHelp.downloadDir.getFile(
-                BookHelp.cacheFolderName,
-                book.getFolderName(),
-                "index.epubx"
-            )
-            if (!file.exists()) {
-                val input = if (book.bookUrl.isContentScheme()) {
-                    val uri = Uri.parse(book.bookUrl)
-                    appCtx.contentResolver.openInputStream(uri)
-                } else {
-                    File(book.bookUrl).inputStream()
-                }
-                if (input != null) {
-                    FileUtils.writeInputStream(file, input)
-                }
-            }
-            return file
-        }
-
         @Synchronized
         private fun getEFile(book: Book): EpubFile {
-            getFile(book)
             if (eFile == null || eFile?.book?.bookUrl != book.bookUrl) {
                 eFile = EpubFile(book)
                 //对于Epub文件默认不启用替换
@@ -126,9 +105,9 @@ class EpubFile(var book: Book) {
     /*重写epub文件解析代码，直接读出压缩包文件生成Resources给epublib，这样的好处是可以逐一修改某些文件的格式错误*/
     private fun readEpub(): EpubBook? {
         try {
-            val file = getFile(book)
+            val bis = LocalBook.getBookInputStream(book)
             //通过懒加载读取epub
-            return EpubReader().readEpubLazy(ZipFile(file), "utf-8")
+            return EpubReader().readEpub(bis, "utf-8")
         } catch (e: Exception) {
             Timber.e(e)
         }
diff --git a/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt b/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
index 8294ace2e..59cfe9729 100644
--- a/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
@@ -15,6 +15,9 @@ import io.legado.app.utils.*
 import splitties.init.appCtx
 import timber.log.Timber
 import java.io.File
+import java.io.FileInputStream
+import java.io.FileNotFoundException
+import java.io.InputStream
 import java.util.regex.Matcher
 import java.util.regex.Pattern
 import javax.script.SimpleBindings
@@ -26,6 +29,15 @@ object LocalBook {
         FileUtils.createFolderIfNotExist(appCtx.externalFiles, folderName)
     }
 
+    @Throws(FileNotFoundException::class)
+    fun getBookInputStream(book: Book): InputStream {
+        if (book.bookUrl.isContentScheme()) {
+            val uri = Uri.parse(book.bookUrl)
+            return appCtx.contentResolver.openInputStream(uri)!!
+        }
+        return FileInputStream(File(book.bookUrl))
+    }
+
     @Throws(Exception::class)
     fun getChapterList(book: Book): ArrayList<BookChapter> {
         val chapters = when {
@@ -150,14 +162,12 @@ object LocalBook {
     fun deleteBook(book: Book, deleteOriginal: Boolean) {
         kotlin.runCatching {
             if (book.isLocalTxt() || book.isUmd()) {
-                val bookFile = cacheFolder.getFile(book.originName)
-                bookFile.delete()
+                cacheFolder.getFile(book.originName).delete()
             }
             if (book.isEpub()) {
-                val bookFile = EpubFile.getFile(book).parentFile
-                if (bookFile != null && bookFile.exists()) {
-                    FileUtils.delete(bookFile, true)
-                }
+                FileUtils.delete(
+                    cacheFolder.getFile(book.getFolderName())
+                )
             }
 
             if (deleteOriginal) {
diff --git a/app/src/main/java/io/legado/app/model/localBook/TextFile.kt b/app/src/main/java/io/legado/app/model/localBook/TextFile.kt
index 952f68803..8d1d3feaa 100644
--- a/app/src/main/java/io/legado/app/model/localBook/TextFile.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/TextFile.kt
@@ -1,6 +1,5 @@
 package io.legado.app.model.localBook
 
-import android.net.Uri
 import io.legado.app.data.appDb
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
@@ -9,12 +8,7 @@ import io.legado.app.help.DefaultData
 import io.legado.app.utils.EncodingDetect
 import io.legado.app.utils.MD5Utils
 import io.legado.app.utils.StringUtils
-import io.legado.app.utils.isContentScheme
-import splitties.init.appCtx
-import java.io.File
-import java.io.FileInputStream
 import java.io.FileNotFoundException
-import java.io.InputStream
 import java.nio.charset.Charset
 import java.util.regex.Matcher
 import java.util.regex.Pattern
@@ -28,7 +22,7 @@ class TextFile(private val book: Book) {
     fun getChapterList(): ArrayList<BookChapter> {
         var rulePattern: Pattern? = null
         if (book.charset == null || book.tocUrl.isNotEmpty()) {
-            getBookInputStream(book).use { bis ->
+            LocalBook.getBookInputStream(book).use { bis ->
                 val buffer = ByteArray(BUFFER_SIZE)
                 var blockContent: String
                 bis.read(buffer)
@@ -55,7 +49,7 @@ class TextFile(private val book: Book) {
 
     private fun analyze(pattern: Pattern?): ArrayList<BookChapter> {
         val toc = arrayListOf<BookChapter>()
-        getBookInputStream(book).use { bis ->
+        LocalBook.getBookInputStream(book).use { bis ->
             var tocRule: TxtTocRule? = null
             val buffer = ByteArray(BUFFER_SIZE)
             var blockContent: String
@@ -279,7 +273,7 @@ class TextFile(private val book: Book) {
         fun getContent(book: Book, bookChapter: BookChapter): String {
             val count = (bookChapter.end!! - bookChapter.start!!).toInt()
             val buffer = ByteArray(count)
-            getBookInputStream(book).use { bis ->
+            LocalBook.getBookInputStream(book).use { bis ->
                 bis.skip(bookChapter.start!!)
                 bis.read(buffer)
             }
@@ -288,15 +282,6 @@ class TextFile(private val book: Book) {
                 .replace("^[\\n\\s]+".toRegex(), "　　")
         }
 
-        @Throws(FileNotFoundException::class)
-        private fun getBookInputStream(book: Book): InputStream {
-            if (book.bookUrl.isContentScheme()) {
-                val uri = Uri.parse(book.bookUrl)
-                return appCtx.contentResolver.openInputStream(uri)!!
-            }
-            return FileInputStream(File(book.bookUrl))
-        }
-
         private fun getTocRules(): List<TxtTocRule> {
             var rules = appDb.txtTocRuleDao.enabled
             if (rules.isEmpty()) {
diff --git a/app/src/main/java/io/legado/app/model/localBook/UmdFile.kt b/app/src/main/java/io/legado/app/model/localBook/UmdFile.kt
index 03ce0a113..c2e46c5a2 100644
--- a/app/src/main/java/io/legado/app/model/localBook/UmdFile.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/UmdFile.kt
@@ -1,12 +1,10 @@
 package io.legado.app.model.localBook
 
-import android.net.Uri
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.utils.FileUtils
 import io.legado.app.utils.MD5Utils
 import io.legado.app.utils.externalFiles
-import io.legado.app.utils.isContentScheme
 import me.ag2s.umdlib.domain.UmdBook
 import me.ag2s.umdlib.umd.UmdReader
 import splitties.init.appCtx
@@ -87,12 +85,7 @@ class UmdFile(var book: Book) {
     }
 
     private fun readUmd(): UmdBook? {
-        val input = if (book.bookUrl.isContentScheme()) {
-            val uri = Uri.parse(book.bookUrl)
-            appCtx.contentResolver.openInputStream(uri)
-        } else {
-            File(book.bookUrl).inputStream()
-        }
+        val input = LocalBook.getBookInputStream(book)
         return UmdReader().read(input)
     }