diff --git a/app/src/main/assets/help/help.md b/app/src/main/assets/help/appHelp.md
similarity index 100%
rename from app/src/main/assets/help/help.md
rename to app/src/main/assets/help/appHelp.md
diff --git a/app/src/main/assets/help/httpTts.md b/app/src/main/assets/help/httpTTSHelp.md
similarity index 100%
rename from app/src/main/assets/help/httpTts.md
rename to app/src/main/assets/help/httpTTSHelp.md
diff --git a/app/src/main/assets/help/readHelp.md b/app/src/main/assets/help/readHelp.md
new file mode 100644
index 000000000..813afecb0
--- /dev/null
+++ b/app/src/main/assets/help/readHelp.md
@@ -0,0 +1 @@
+# 阅读界面帮助文档
\ No newline at end of file
diff --git a/app/src/main/assets/help/regex.md b/app/src/main/assets/help/regexHelp.md
similarity index 99%
rename from app/src/main/assets/help/regex.md
rename to app/src/main/assets/help/regexHelp.md
index 93888dcf2..f69a6cdc2 100644
--- a/app/src/main/assets/help/regex.md
+++ b/app/src/main/assets/help/regexHelp.md
@@ -1,4 +1,4 @@
-## 正则表达式学习
+# 正则表达式学习
 
 - [基本匹配](#1-基本匹配)
 - [元字符](#2-元字符)
diff --git a/app/src/main/assets/help/webDavHelp.md b/app/src/main/assets/help/webDavHelp.md
new file mode 100644
index 000000000..94e0a9c3d
--- /dev/null
+++ b/app/src/main/assets/help/webDavHelp.md
@@ -0,0 +1 @@
+# WebDav备份教程
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineDialog.kt
index 3649c0bbd..a0fc51d4e 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineDialog.kt
@@ -29,7 +29,6 @@ import kotlinx.android.synthetic.main.dialog_http_tts_edit.view.*
 import kotlinx.android.synthetic.main.dialog_recycler_view.*
 import kotlinx.android.synthetic.main.item_http_tts.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
-import java.io.File
 
 class SpeakEngineDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
 
@@ -128,7 +127,7 @@ class SpeakEngineDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
             }
             neutralButton(R.string.help) {
                 val helpStr = String(
-                    requireContext().assets.open("help${File.separator}httpTts.md").readBytes()
+                    requireContext().assets.open("help/httpTTSHelp.md").readBytes()
                 )
                 TextDialog.show(childFragmentManager, helpStr, TextDialog.MD)
             }
diff --git a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
index 5ff78d0b7..62f902e2f 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
@@ -389,7 +389,7 @@ class BookSourceEditActivity :
     }
 
     private fun showRegexHelp() {
-        val mdText = String(assets.open("help/regex.md").readBytes())
+        val mdText = String(assets.open("help/regexHelp.md").readBytes())
         TextDialog.show(supportFragmentManager, mdText, TextDialog.MD)
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
index b5d9eb333..a2149895d 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
@@ -104,7 +104,7 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
         if (getPrefInt(PreferKey.versionCode) != App.versionCode) {
             putPrefInt(PreferKey.versionCode, App.versionCode)
             if (LocalConfig.isFirstOpen) {
-                val text = String(assets.open("help/help.md").readBytes())
+                val text = String(assets.open("help/appHelp.md").readBytes())
                 TextDialog.show(supportFragmentManager, text, TextDialog.MD)
                 LocalConfig.isFirstOpen = false
             } else if (!BuildConfig.DEBUG) {
diff --git a/app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt b/app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt
index 967490d6a..8a7fb2016 100644
--- a/app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt
@@ -50,7 +50,7 @@ class MyFragment : BaseFragment(R.layout.fragment_my_config), FilePickerDialog.C
     override fun onCompatOptionsItemSelected(item: MenuItem) {
         when (item.itemId) {
             R.id.menu_help -> {
-                val text = String(requireContext().assets.open("help/help.md").readBytes())
+                val text = String(requireContext().assets.open("help/appHelp.md").readBytes())
                 TextDialog.show(childFragmentManager, text, TextDialog.MD)
             }
         }
diff --git a/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt b/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
index aac892a26..ee07a9244 100644
--- a/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
@@ -144,7 +144,7 @@ class ReplaceEditActivity :
     }
 
     private fun showRegexHelp() {
-        val mdText = String(assets.open("help/regex.md").readBytes())
+        val mdText = String(assets.open("help/regexHelp.md").readBytes())
         TextDialog.show(supportFragmentManager, mdText, TextDialog.MD)
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt b/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
index a1f2119d2..a7cff6603 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
@@ -206,7 +206,7 @@ class RssSourceEditActivity :
     }
 
     private fun showRegexHelp() {
-        val mdText = String(assets.open("help/regex.md").readBytes())
+        val mdText = String(assets.open("help/regexHelp.md").readBytes())
         TextDialog.show(supportFragmentManager, mdText, TextDialog.MD)
     }