diff --git a/app/src/main/java/io/legado/app/api/controller/BookController.kt b/app/src/main/java/io/legado/app/api/controller/BookController.kt
index 21bd86c4a..ab55f75ba 100644
--- a/app/src/main/java/io/legado/app/api/controller/BookController.kt
+++ b/app/src/main/java/io/legado/app/api/controller/BookController.kt
@@ -79,6 +79,7 @@ object BookController {
             ?: return returnData.setErrorMsg("bookUrl为空")
         val src = parameters["path"]?.firstOrNull()
             ?: return returnData.setErrorMsg("图片链接为空")
+        val width = parameters["width"]?.firstOrNull()?.toInt() ?: 640
         if (this.bookUrl != bookUrl) {
             this.book = appDb.bookDao.getBook(bookUrl)
                 ?: return returnData.setErrorMsg("bookUrl不对")
@@ -94,7 +95,7 @@ object BookController {
         }
         this.bookUrl = bookUrl
         return returnData.setData(
-            BitmapUtils.decodeBitmap(vFile.absolutePath, 640, 640)
+            BitmapUtils.decodeBitmap(vFile.absolutePath, width, width)
         )
     }