diff --git a/app/src/main/java/io/legado/app/ui/config/ImageBlurringDialogFragment.kt b/app/src/main/java/io/legado/app/ui/config/ImageBlurringDialogFragment.kt
new file mode 100644
index 000000000..06065dd69
--- /dev/null
+++ b/app/src/main/java/io/legado/app/ui/config/ImageBlurringDialogFragment.kt
@@ -0,0 +1,53 @@
+package io.legado.app.ui.config
+
+import android.app.Dialog
+import android.content.SharedPreferences
+import android.os.Bundle
+import android.widget.SeekBar
+import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.DialogFragment
+import androidx.fragment.app.FragmentManager
+import androidx.preference.PreferenceManager
+import io.legado.app.R
+import io.legado.app.databinding.FragmentImageBlurringDialogBinding
+
+class ImageBlurringDialogFragment(private val prefName: String, private val block: () -> Unit): DialogFragment() {
+
+    companion object {
+        private const val DEFAULT_VALUE = 0
+        private const val TAG = "ImageBlurringDialogFragment"
+    }
+
+    private val requireContext get() = requireContext()
+    private var _fragmentImageBlurringDialogBinding: FragmentImageBlurringDialogBinding? = null
+    private val fragmentImageBlurringDialog get() = _fragmentImageBlurringDialogBinding!!
+    private lateinit var sharedPreference: SharedPreferences
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        _fragmentImageBlurringDialogBinding = FragmentImageBlurringDialogBinding.inflate(layoutInflater)
+        sharedPreference = PreferenceManager.getDefaultSharedPreferences(requireContext)
+        sharedPreference.getInt(prefName, DEFAULT_VALUE).apply {
+            fragmentImageBlurringDialog.seekBar.progress = this
+            fragmentImageBlurringDialog.textViewValue.text = this.toString()
+        }
+        fragmentImageBlurringDialog.seekBar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
+            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
+                fragmentImageBlurringDialog.textViewValue.text = progress.toString()
+            }
+            override fun onStartTrackingTouch(seekBar: SeekBar?) = Unit
+            override fun onStopTrackingTouch(seekBar: SeekBar?) = Unit
+        })
+        return AlertDialog.Builder(requireContext)
+            .setTitle(R.string.background_image_blurring_radius)
+            .setView(fragmentImageBlurringDialog.root)
+            .setPositiveButton(R.string.dialog_confirm) { _, _ ->
+                sharedPreference.edit().putInt(prefName, fragmentImageBlurringDialog.seekBar.progress).commit()
+                block()
+            }
+            .setNegativeButton(R.string.dialog_cancel) { _, _ -> }
+            .create()
+    }
+
+    fun show(fragmentManager: FragmentManager) = show(fragmentManager, TAG)
+
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_image_blurring_dialog.xml b/app/src/main/res/layout/fragment_image_blurring_dialog.xml
new file mode 100644
index 000000000..907aff57c
--- /dev/null
+++ b/app/src/main/res/layout/fragment_image_blurring_dialog.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="10dp">
+
+    <androidx.appcompat.widget.AppCompatSeekBar
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="25"
+        android:id="@+id/seek_bar" />
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/text_view_value"
+        android:layout_gravity="center_horizontal"
+        android:textSize="17sp"
+        android:textColor="@color/black"/>
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/background_image_hint" />
+
+</LinearLayout>
\ No newline at end of file