diff --git a/app/src/main/java/io/legado/app/help/book/BookExtensions.kt b/app/src/main/java/io/legado/app/help/book/BookExtensions.kt
index de23f1897..148c63b67 100644
--- a/app/src/main/java/io/legado/app/help/book/BookExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/book/BookExtensions.kt
@@ -6,6 +6,7 @@ import android.net.Uri
 import io.legado.app.constant.BookSourceType
 import io.legado.app.constant.BookType
 import io.legado.app.data.appDb
+import io.legado.app.data.entities.BaseBook
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookSource
 import io.legado.app.exception.NoStackTraceException
@@ -198,3 +199,10 @@ fun Book.sync(oldBook: Book) {
     durChapterTitle = curBook.durChapterTitle
     canUpdate = curBook.canUpdate
 }
+
+fun Book.isSameNameAuthor(other: Any?): Boolean {
+    if (other is BaseBook) {
+        return name == other.name && author == other.author
+    }
+    return false
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt b/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
index 534afef54..982fa6645 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
@@ -15,10 +15,7 @@ import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.data.entities.BookSource
 import io.legado.app.exception.NoStackTraceException
-import io.legado.app.help.book.BookHelp
-import io.legado.app.help.book.getRemoteUrl
-import io.legado.app.help.book.isLocal
-import io.legado.app.help.book.removeType
+import io.legado.app.help.book.*
 import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.lib.webdav.ObjectNotFoundException
 import io.legado.app.model.BookCover
@@ -201,6 +198,10 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
                                 }
                                 appDb.bookChapterDao.delByBook(oldBook.bookUrl)
                                 appDb.bookChapterDao.insert(*it.toTypedArray())
+                                if (book.isSameNameAuthor(ReadBook.book)) {
+                                    ReadBook.book = book
+                                    ReadBook.chapterSize = book.totalChapterNum
+                                }
                             }
                             chapterListData.postValue(it)
                         }.onError {
diff --git a/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt b/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
index 1f2d753d0..b04240084 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
@@ -16,6 +16,7 @@ import io.legado.app.help.book.*
 import io.legado.app.help.config.AppConfig
 import io.legado.app.help.config.LocalConfig
 import io.legado.app.model.CacheBook
+import io.legado.app.model.ReadBook
 import io.legado.app.model.webBook.WebBook
 import io.legado.app.service.CacheBookService
 import io.legado.app.utils.postEvent
@@ -138,6 +139,10 @@ class MainViewModel(application: Application) : BaseViewModel(application) {
                 }
                 appDb.bookChapterDao.delByBook(bookUrl)
                 appDb.bookChapterDao.insert(*toc.toTypedArray())
+                if (book.isSameNameAuthor(ReadBook)) {
+                    ReadBook.book = book
+                    ReadBook.chapterSize = book.totalChapterNum
+                }
                 addDownload(source, book)
             }.onFailure {
                 AppLog.put("${book.name} 更新目录失败\n${it.localizedMessage}", it)