diff --git a/app/src/main/java/io/legado/app/data/entities/Book.kt b/app/src/main/java/io/legado/app/data/entities/Book.kt
index c6c62aa4b..7996e3ea9 100644
--- a/app/src/main/java/io/legado/app/data/entities/Book.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Book.kt
@@ -151,11 +151,26 @@ data class Book(
         delete()
         App.db.bookDao().insert(newBook)
     }
-    
+
     fun delete() {
         if (ReadBook.book?.bookUrl == bookUrl) {
             ReadBook.book = null
         }
         App.db.bookDao().delete(this)
     }
+
+    fun upInfoFromOld(oldBook: Book?) {
+        oldBook?.let {
+            group = oldBook.group
+            durChapterIndex = oldBook.durChapterIndex
+            durChapterPos = oldBook.durChapterPos
+            durChapterTitle = oldBook.durChapterTitle
+            customCoverUrl = oldBook.customCoverUrl
+            customIntro = oldBook.customIntro
+            order = oldBook.order
+            if (coverUrl.isNullOrEmpty()) {
+                coverUrl = oldBook.getDisplayCover()
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/service/help/ReadBook.kt b/app/src/main/java/io/legado/app/service/help/ReadBook.kt
index 25858c022..e8485261c 100644
--- a/app/src/main/java/io/legado/app/service/help/ReadBook.kt
+++ b/app/src/main/java/io/legado/app/service/help/ReadBook.kt
@@ -85,8 +85,10 @@ object ReadBook {
     }
 
     fun upMsg(msg: String?) {
-        this.msg = msg
-        callBack?.upContent()
+        if (this.msg != msg) {
+            this.msg = msg
+            callBack?.upContent()
+        }
     }
 
     fun moveToNextPage() {
@@ -263,9 +265,11 @@ object ReadBook {
     }
 
     private fun download(chapter: BookChapter, resetPageOffset: Boolean) {
-        book?.let { book ->
-            webBook?.getContent(book, chapter)
-                ?.onSuccess(Dispatchers.IO) { content ->
+        val book = book
+        val webBook = webBook
+        if (book != null && webBook != null) {
+            webBook.getContent(book, chapter)
+                .onSuccess(Dispatchers.IO) { content ->
                     if (content.isEmpty()) {
                         contentLoadFinish(
                             book,
@@ -276,10 +280,15 @@ object ReadBook {
                         removeLoading(chapter.index)
                     } else {
                         BookHelp.saveContent(book, chapter, content)
-                        contentLoadFinish(book, chapter, content, resetPageOffset = resetPageOffset)
+                        contentLoadFinish(
+                            book,
+                            chapter,
+                            content,
+                            resetPageOffset = resetPageOffset
+                        )
                         removeLoading(chapter.index)
                     }
-                }?.onError {
+                }.onError {
                     contentLoadFinish(
                         book,
                         chapter,
@@ -288,6 +297,16 @@ object ReadBook {
                     )
                     removeLoading(chapter.index)
                 }
+        } else if (book != null) {
+            contentLoadFinish(
+                book,
+                chapter,
+                "没有书源",
+                resetPageOffset = resetPageOffset
+            )
+            removeLoading(chapter.index)
+        } else {
+            removeLoading(chapter.index)
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceDialog.kt b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceDialog.kt
index 7ebb4c0db..bbd627466 100644
--- a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceDialog.kt
@@ -166,19 +166,8 @@ class ChangeSourceDialog : BaseDialogFragment(),
 
     override fun changeTo(searchBook: SearchBook) {
         val book = searchBook.toBook()
-        callBack?.oldBook?.let { oldBook ->
-            book.group = oldBook.group
-            book.durChapterIndex = oldBook.durChapterIndex
-            book.durChapterPos = oldBook.durChapterPos
-            book.durChapterTitle = oldBook.durChapterTitle
-            book.customCoverUrl = oldBook.customCoverUrl
-            book.customIntro = oldBook.customIntro
-            book.order = oldBook.order
-            if (book.coverUrl.isNullOrEmpty()) {
-                book.coverUrl = oldBook.getDisplayCover()
-            }
-            callBack?.changeTo(book)
-        }
+        book.upInfoFromOld(callBack?.oldBook)
+        callBack?.changeTo(book)
         dismiss()
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
index 908a968af..b8efe1cee 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
@@ -46,11 +46,11 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
     private fun initBook(book: Book) {
         if (ReadBook.book?.bookUrl != book.bookUrl) {
             ReadBook.resetData(book)
+            isInitFinish = true
             if (!book.isLocalBook() && ReadBook.webBook == null) {
                 autoChangeSource(book.name, book.author)
                 return
             }
-            isInitFinish = true
             ReadBook.chapterSize = App.db.bookChapterDao().getChapterCount(book.bookUrl)
             if (ReadBook.chapterSize == 0) {
                 if (book.tocUrl.isEmpty()) {
@@ -65,6 +65,7 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
                 ReadBook.loadContent(resetPageOffset = true)
             }
         } else {
+            ReadBook.book = book
             if (ReadBook.durChapterIndex != book.durChapterIndex) {
                 ReadBook.durChapterIndex = book.durChapterIndex
                 ReadBook.durPageIndex = book.durChapterPos
@@ -72,7 +73,6 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
                 ReadBook.curTextChapter = null
                 ReadBook.nextTextChapter = null
             }
-            ReadBook.book!!.group = book.group
             ReadBook.titleDate.postValue(book.name)
             ReadBook.upWebBook(book)
             isInitFinish = true
@@ -160,20 +160,24 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
         execute {
             ReadBook.upMsg(null)
             ReadBook.book?.changeTo(newBook)
+            ReadBook.book = newBook
+            App.db.bookSourceDao().getBookSource(newBook.origin)?.let {
+                ReadBook.webBook = WebBook(it)
+            }
             ReadBook.prevTextChapter = null
             ReadBook.curTextChapter = null
             ReadBook.nextTextChapter = null
             withContext(Main) {
                 ReadBook.callBack?.upContent()
             }
-            ReadBook.book = newBook
-            App.db.bookSourceDao().getBookSource(newBook.origin)?.let {
-                ReadBook.webBook = WebBook(it)
-            }
             if (newBook.tocUrl.isEmpty()) {
-                loadBookInfo(newBook) { upChangeDurChapterIndex(newBook, it) }
+                loadBookInfo(newBook) {
+                    upChangeDurChapterIndex(newBook, it)
+                }
             } else {
-                loadChapterList(newBook) { upChangeDurChapterIndex(newBook, it) }
+                loadChapterList(newBook) {
+                    upChangeDurChapterIndex(newBook, it)
+                }
             }
         }
     }
@@ -188,8 +192,10 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
                         .searchBookSuspend(this, name, variableBook = variableBook)
                         .getOrNull(0)?.let {
                             if (it.name == name && (it.author == author || author == "")) {
-                                changeTo(it.toBook())
-                                return@forEach
+                                val book = it.toBook()
+                                book.upInfoFromOld(ReadBook.book)
+                                changeTo(book)
+                                return@execute
                             }
                         }
                 } catch (e: Exception) {
@@ -215,6 +221,7 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
             App.db.bookDao().update(book)
             App.db.bookChapterDao().insert(*chapters.toTypedArray())
             ReadBook.chapterSize = chapters.size
+            ReadBook.upMsg(null)
             ReadBook.loadContent(resetPageOffset = true)
         }
     }