diff --git a/app/src/main/java/io/legado/app/help/BookHelp.kt b/app/src/main/java/io/legado/app/help/BookHelp.kt
index 94accaa5e..f28077ab8 100644
--- a/app/src/main/java/io/legado/app/help/BookHelp.kt
+++ b/app/src/main/java/io/legado/app/help/BookHelp.kt
@@ -27,7 +27,7 @@ object BookHelp {
         return formatFolderName(book.name) + MD5Utils.md5Encode16(book.bookUrl)
     }
 
-    private fun bookChapterName(bookChapter: BookChapter): String {
+    fun formatChapterName(bookChapter: BookChapter): String {
         return String.format("%05d-%s", bookChapter.index, MD5Utils.md5Encode16(bookChapter.title))
     }
 
@@ -53,14 +53,14 @@ object BookHelp {
             DocumentFile.fromTreeUri(App.INSTANCE, downloadUri)?.let { root ->
                 DocumentUtils.createFileIfNotExist(
                     root,
-                    "${bookChapterName(bookChapter)}.nb",
+                    "${formatChapterName(bookChapter)}.nb",
                     subDirs = *arrayOf(cacheFolderName, bookFolderName(book))
                 )?.uri?.writeText(App.INSTANCE, content)
             }
         } else {
             FileUtils.createFileIfNotExist(
                 File(downloadPath),
-                "${bookChapterName(bookChapter)}.nb",
+                "${formatChapterName(bookChapter)}.nb",
                 subDirs = *arrayOf(cacheFolderName, bookFolderName(book))
             ).writeText(content)
         }
@@ -99,7 +99,7 @@ object BookHelp {
                 DocumentFile.fromTreeUri(App.INSTANCE, downloadUri)?.let { root ->
                     return DocumentUtils.exists(
                         root,
-                        "${bookChapterName(bookChapter)}.nb",
+                        "${formatChapterName(bookChapter)}.nb",
                         subDirs = *arrayOf(cacheFolderName, bookFolderName(book))
                     )
                 }
@@ -107,7 +107,7 @@ object BookHelp {
             else -> {
                 return FileUtils.exists(
                     File(downloadPath),
-                    "${bookChapterName(bookChapter)}.nb",
+                    "${formatChapterName(bookChapter)}.nb",
                     subDirs = *arrayOf(cacheFolderName, bookFolderName(book))
                 )
             }
@@ -125,14 +125,14 @@ object BookHelp {
                     return DocumentUtils.getDirDocument(
                         root,
                         subDirs = *arrayOf(cacheFolderName, bookFolderName(book))
-                    )?.findFile("${bookChapterName(bookChapter)}.nb")
+                    )?.findFile("${formatChapterName(bookChapter)}.nb")
                         ?.uri?.readText(App.INSTANCE)
                 }
             }
             else -> {
                 val file = FileUtils.getFile(
                     File(downloadPath),
-                    "${bookChapterName(bookChapter)}.nb",
+                    "${formatChapterName(bookChapter)}.nb",
                     subDirs = *arrayOf(cacheFolderName, bookFolderName(book))
                 )
                 if (file.exists()) {
@@ -151,14 +151,14 @@ object BookHelp {
                     DocumentUtils.getDirDocument(
                         root,
                         subDirs = *arrayOf(cacheFolderName, bookFolderName(book))
-                    )?.findFile("${bookChapterName(bookChapter)}.nb")
+                    )?.findFile("${formatChapterName(bookChapter)}.nb")
                         ?.delete()
                 }
             }
             else -> {
                 FileUtils.createFileIfNotExist(
                     File(downloadPath),
-                    "${bookChapterName(bookChapter)}.nb",
+                    "${formatChapterName(bookChapter)}.nb",
                     subDirs = *arrayOf(cacheFolderName, bookFolderName(book))
                 ).delete()
             }
diff --git a/app/src/main/java/io/legado/app/ui/chapterlist/ChapterListAdapter.kt b/app/src/main/java/io/legado/app/ui/chapterlist/ChapterListAdapter.kt
index 53d1f6d86..f70e6beaf 100644
--- a/app/src/main/java/io/legado/app/ui/chapterlist/ChapterListAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/chapterlist/ChapterListAdapter.kt
@@ -6,6 +6,7 @@ import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
+import io.legado.app.help.BookHelp
 import io.legado.app.lib.theme.accentColor
 import io.legado.app.utils.getCompatColor
 import io.legado.app.utils.visible
@@ -16,6 +17,8 @@ import org.jetbrains.anko.sdk27.listeners.onClick
 class ChapterListAdapter(context: Context, val callback: Callback) :
     SimpleRecyclerAdapter<BookChapter>(context, R.layout.item_chapter_list) {
 
+    val cacheFileNames = arrayListOf<String>()
+
     override fun convert(holder: ItemViewHolder, item: BookChapter, payloads: MutableList<Any>) {
         with(holder.itemView) {
             if (payloads.isEmpty()) {
@@ -32,9 +35,11 @@ class ChapterListAdapter(context: Context, val callback: Callback) :
                 this.onClick {
                     callback.openChapter(item)
                 }
+                tv_chapter_name.paint.isFakeBoldText =
+                    cacheFileNames.contains(BookHelp.formatChapterName(item))
             } else {
-                val hasContent = payloads[0] as Boolean
-                tv_chapter_name.paint.isFakeBoldText = hasContent
+                tv_chapter_name.paint.isFakeBoldText =
+                    cacheFileNames.contains(BookHelp.formatChapterName(item))
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/ui/chapterlist/ChapterListFragment.kt b/app/src/main/java/io/legado/app/ui/chapterlist/ChapterListFragment.kt
index 3a9ed036d..5dda2fd94 100644
--- a/app/src/main/java/io/legado/app/ui/chapterlist/ChapterListFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/chapterlist/ChapterListFragment.kt
@@ -11,12 +11,14 @@ import io.legado.app.R
 import io.legado.app.base.VMBaseFragment
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
+import io.legado.app.help.BookHelp
 import io.legado.app.lib.theme.backgroundColor
 import io.legado.app.ui.widget.recycler.UpLinearLayoutManager
 import io.legado.app.utils.getVerticalDivider
 import io.legado.app.utils.getViewModelOfActivity
 import kotlinx.android.synthetic.main.fragment_chapter_list.*
 import kotlinx.coroutines.Dispatchers.IO
+import kotlinx.coroutines.Dispatchers.Main
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.jetbrains.anko.sdk27.listeners.onClick
@@ -49,17 +51,31 @@ class ChapterListFragment : VMBaseFragment<ChapterListViewModel>(R.layout.fragme
         recycler_view.adapter = adapter
     }
 
+    private fun initView() {
+        ll_chapter_base_info.setBackgroundColor(backgroundColor)
+        iv_chapter_top.onClick { mLayoutManager.scrollToPositionWithOffset(0, 0) }
+        iv_chapter_bottom.onClick {
+            if (adapter.itemCount > 0) {
+                mLayoutManager.scrollToPositionWithOffset(adapter.itemCount - 1, 0)
+            }
+        }
+        tv_current_chapter_info.onClick {
+            mLayoutManager.scrollToPositionWithOffset(durChapterIndex, 0)
+        }
+    }
+
     private fun initBook() {
         launch {
             withContext(IO) {
                 book = App.db.bookDao().getBook(viewModel.bookUrl)
             }
+            initDoc()
             book?.let {
                 durChapterIndex = it.durChapterIndex
                 tv_current_chapter_info.text = it.durChapterTitle
                 mLayoutManager.scrollToPositionWithOffset(durChapterIndex, 0)
+                initCatchFileNames(it)
             }
-            initDoc()
         }
     }
 
@@ -72,17 +88,13 @@ class ChapterListFragment : VMBaseFragment<ChapterListViewModel>(R.layout.fragme
         })
     }
 
-    private fun initView() {
-        ll_chapter_base_info.setBackgroundColor(backgroundColor)
-        iv_chapter_top.onClick { mLayoutManager.scrollToPositionWithOffset(0, 0) }
-        iv_chapter_bottom.onClick {
-            if (adapter.itemCount > 0) {
-                mLayoutManager.scrollToPositionWithOffset(adapter.itemCount - 1, 0)
+    private fun initCatchFileNames(book: Book) {
+        launch(IO) {
+            adapter.cacheFileNames.addAll(BookHelp.getChapterFiles(book))
+            withContext(Main) {
+                adapter.notifyItemRangeChanged(0, adapter.getActualItemCount(), true)
             }
         }
-        tv_current_chapter_info.onClick {
-            mLayoutManager.scrollToPositionWithOffset(durChapterIndex, 0)
-        }
     }
 
     override fun startChapterListSearch(newText: String?) {