diff --git a/app/src/main/java/io/legado/app/ui/widget/dialog/PhotoDialog.kt b/app/src/main/java/io/legado/app/ui/widget/dialog/PhotoDialog.kt
index 9bebadcae..302341e21 100644
--- a/app/src/main/java/io/legado/app/ui/widget/dialog/PhotoDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/dialog/PhotoDialog.kt
@@ -1,8 +1,11 @@
 package io.legado.app.ui.widget.dialog
 
 import android.annotation.SuppressLint
+import android.graphics.Bitmap
+import android.graphics.drawable.BitmapDrawable
 import android.os.Bundle
 import android.view.View
+import android.view.ViewGroup
 import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.bumptech.glide.load.resource.bitmap.DownsampleStrategy
 import com.bumptech.glide.request.RequestOptions
@@ -15,7 +18,10 @@ import io.legado.app.help.glide.OkHttpModelLoader
 import io.legado.app.model.BookCover
 import io.legado.app.model.ImageProvider
 import io.legado.app.model.ReadBook
+import io.legado.app.utils.ImageSaveUtils.saveImageToGallery
+import io.legado.app.utils.toastOnUi
 import io.legado.app.utils.viewbindingdelegate.viewBinding
+import java.io.ByteArrayOutputStream
 
 /**
  * 显示图片
@@ -29,6 +35,13 @@ class PhotoDialog() : BaseBottomSheetDialogFragment(R.layout.dialog_photo_view)
         }
     }
 
+    override fun onStart() {
+        super.onStart()
+        val sheet = dialog
+            ?.findViewById<View>(com.google.android.material.R.id.design_bottom_sheet)
+        sheet?.layoutParams?.height = ViewGroup.LayoutParams.MATCH_PARENT
+    }
+
     private val binding by viewBinding(DialogPhotoViewBinding::bind)
 
     @SuppressLint("CheckResult")
@@ -59,6 +72,26 @@ class PhotoDialog() : BaseBottomSheetDialogFragment(R.layout.dialog_photo_view)
                 .downsample(DownsampleStrategy.NONE)
                 .into(binding.photoView)
         }
+        binding.photoView.setOnLongClickListener {
+            saveCurrentImage()
+            true
+        }
+    }
+
+    private fun saveCurrentImage() {
+        val drawable = binding.photoView.drawable ?: return
+        val bitmap = (drawable as? BitmapDrawable)?.bitmap ?: return
+
+        val byteArray = ByteArrayOutputStream().use { stream ->
+            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream)
+            stream.toByteArray()
+        }
+
+        val success = saveImageToGallery(requireContext(), byteArray)
+
+        toastOnUi(
+            if (success) "已保存到相册" else "保存失败"
+        )
     }
 
 }
diff --git a/app/src/main/res/layout/dialog_photo_view.xml b/app/src/main/res/layout/dialog_photo_view.xml
index 808897770..43e44bf28 100644
--- a/app/src/main/res/layout/dialog_photo_view.xml
+++ b/app/src/main/res/layout/dialog_photo_view.xml
@@ -1,47 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:paddingHorizontal="16dp"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <LinearLayout
-        android:id="@+id/header_layout"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:orientation="vertical"
-        android:gravity="center"
-        android:paddingHorizontal="16dp"
-        android:paddingBottom="8dp"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent">
-
-        <com.google.android.material.bottomsheet.BottomSheetDragHandleView
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:paddingVertical="16dp"
-            android:minHeight="0dp"
-            android:layout_gravity="center_horizontal" />
-
-        <TextView
-            android:id="@+id/bottom_sheet_title"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="@string/photo"
-            android:textSize="18sp"
-            android:textStyle="bold" />
-    </LinearLayout>
+    android:layout_height="match_parent"
+    android:paddingHorizontal="16dp">
 
     <io.legado.app.ui.widget.image.PhotoView
         android:id="@+id/photo_view"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/header_layout"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        android:scaleType="centerInside" />
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:adjustViewBounds="true"
+        android:scaleType="fitCenter" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>