diff --git a/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt b/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
index 52bcb35a7..368305998 100644
--- a/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/EpubFile.kt
@@ -1,6 +1,7 @@
 package io.legado.app.model.localBook
 
 import android.graphics.Bitmap
+import android.graphics.BitmapFactory
 import android.text.TextUtils
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
@@ -84,13 +85,11 @@ class EpubFile(var book: Book) {
                 if (!File(book.coverUrl!!).exists()) {
                     /*部分书籍DRM处理后，封面获取异常，待优化*/
                     it.coverImage?.inputStream?.use { input ->
-                        BitmapUtils.decodeBitmap(input)?.let { cover ->
-                            val out =
-                                FileOutputStream(FileUtils.createFileIfNotExist(book.coverUrl!!))
-                            cover.compress(Bitmap.CompressFormat.JPEG, 90, out)
-                            out.flush()
-                            out.close()
-                        }
+                        val cover = BitmapFactory.decodeStream(input)
+                        val out = FileOutputStream(FileUtils.createFileIfNotExist(book.coverUrl!!))
+                        cover.compress(Bitmap.CompressFormat.JPEG, 90, out)
+                        out.flush()
+                        out.close()
                     }
                 }
             }
diff --git a/app/src/main/java/io/legado/app/utils/BitmapUtils.kt b/app/src/main/java/io/legado/app/utils/BitmapUtils.kt
index 40f7f7280..b6ef49b99 100644
--- a/app/src/main/java/io/legado/app/utils/BitmapUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/BitmapUtils.kt
@@ -10,7 +10,6 @@ import android.graphics.Color
 import com.google.android.renderscript.Toolkit
 import java.io.FileInputStream
 import java.io.IOException
-import java.io.InputStream
 import kotlin.math.*
 
 
@@ -82,23 +81,6 @@ object BitmapUtils {
         }
     }
 
-    /** 从path中获取Bitmap图片
-     * @param path 图片路径
-     * @return
-     */
-    @Throws(IOException::class)
-    fun decodeBitmap(inputStream: InputStream): Bitmap? {
-        return inputStream.use {
-            val opts = BitmapFactory.Options()
-            opts.inJustDecodeBounds = true
-
-            BitmapFactory.decodeStream(inputStream, null, opts)
-            opts.inSampleSize = computeSampleSize(opts, -1, 128 * 128)
-            opts.inJustDecodeBounds = false
-            BitmapFactory.decodeStream(inputStream, null, opts)
-        }
-    }
-
     /**
      * 以最省内存的方式读取本地资源的图片
      * @param context 设备上下文