diff --git a/app/src/main/java/io/legado/app/lib/theme/view/ATERadioNoButton.kt b/app/src/main/java/io/legado/app/lib/theme/view/ATERadioNoButton.kt
index 138f05992..2e7763741 100644
--- a/app/src/main/java/io/legado/app/lib/theme/view/ATERadioNoButton.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/view/ATERadioNoButton.kt
@@ -1,12 +1,13 @@
 package io.legado.app.lib.theme.view
 
 import android.content.Context
-import android.graphics.Color
 import android.util.AttributeSet
 import androidx.appcompat.widget.AppCompatRadioButton
+import io.legado.app.R
 import io.legado.app.lib.theme.Selector
 import io.legado.app.lib.theme.ThemeStore
 import io.legado.app.utils.dp
+import io.legado.app.utils.getCompatColor
 
 /**
  * @author Aidan Follestad (afollestad)
@@ -27,11 +28,11 @@ class ATERadioNoButton : AppCompatRadioButton {
 
     private fun init(context: Context, attrs: AttributeSet?) {
         background = Selector.shapeBuild()
-            .setCornerRadius(3.dp)
-            .setStrokeWidth(3.dp)
+            .setCornerRadius(2.dp)
+            .setStrokeWidth(2.dp)
             .setCheckedBgColor(ThemeStore.accentColor(context))
             .setCheckedStrokeColor(ThemeStore.accentColor(context))
-            .setDefaultStrokeColor(Color.WHITE)
+            .setDefaultStrokeColor(context.getCompatColor(R.color.tv_text_default))
             .create()
     }
 }
diff --git a/app/src/main/java/io/legado/app/ui/readbook/config/ReadStyleDialog.kt b/app/src/main/java/io/legado/app/ui/readbook/config/ReadStyleDialog.kt
index 1ac15d2cb..e5900e141 100644
--- a/app/src/main/java/io/legado/app/ui/readbook/config/ReadStyleDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/readbook/config/ReadStyleDialog.kt
@@ -125,6 +125,24 @@ class ReadStyleDialog : DialogFragment() {
             seek_text_letter_spacing.progress = (letterSpacing * 10).toInt() + 5
             postEvent(Bus.UP_CONFIG, true)
         }
+        seek_line_size.setOnSeekBarChangeListener(object :
+            SeekBar.OnSeekBarChangeListener {
+            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
+                lineSpacingExtra = progress.toFloat()
+                postEvent(Bus.UP_CONFIG, true)
+            }
+
+            override fun onStartTrackingTouch(seekBar: SeekBar?) {}
+            override fun onStopTrackingTouch(seekBar: SeekBar?) {}
+        })
+        iv_line_size_add.onClick {
+            lineSpacingExtra++
+            postEvent(Bus.UP_CONFIG, true)
+        }
+        iv_line_size_remove.onClick {
+            lineSpacingExtra--
+            postEvent(Bus.UP_CONFIG, true)
+        }
         rg_page_anim.onCheckedChange { _, checkedId ->
             for (i in 0 until rg_page_anim.childCount) {
                 if (checkedId == rg_page_anim[i].id) {
diff --git a/app/src/main/res/layout/dialog_read_book_style.xml b/app/src/main/res/layout/dialog_read_book_style.xml
index 0bb212cf4..362a1f6ae 100644
--- a/app/src/main/res/layout/dialog_read_book_style.xml
+++ b/app/src/main/res/layout/dialog_read_book_style.xml
@@ -182,7 +182,7 @@
             android:max="50" />
 
         <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_text_line_size_add"
+            android:id="@+id/iv_line_size_add"
             android:layout_width="24dp"
             android:layout_height="24dp"
             android:src="@drawable/ic_add"