diff --git a/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt b/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
index 989cdad40..6bd81c895 100644
--- a/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
@@ -462,6 +462,8 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_rea
             page_view.upStyle()
             if (it) {
                 loadContent()
+            } else {
+                page_view.upContent()
             }
         }
         observeEvent<Int>(Bus.TTS_START) { chapterStart ->
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 ff4e6d116..1ac15d2cb 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
@@ -83,29 +83,46 @@ class ReadStyleDialog : DialogFragment() {
         tv_text_bold.onClick {
             textBold = !textBold
             tv_text_bold.isSelected = textBold
-            postEvent(Bus.UP_CONFIG, true)
+            postEvent(Bus.UP_CONFIG, false)
         }
         seek_text_size.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
             override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
                 textSize = progress + 5
                 postEvent(Bus.UP_CONFIG, true)
             }
-
             override fun onStartTrackingTouch(seekBar: SeekBar?) {}
-
-            override fun onStopTrackingTouch(seekBar: SeekBar?) {
-
-            }
-
+            override fun onStopTrackingTouch(seekBar: SeekBar?) {}
         })
         iv_text_size_add.onClick {
             textSize++
             if (textSize > 50) textSize = 50
+            seek_text_size.progress = textSize - 5
             postEvent(Bus.UP_CONFIG, true)
         }
         iv_line_size_remove.onClick {
             textSize--
             if (textSize < 5) textSize = 5
+            seek_text_size.progress = textSize - 5
+            postEvent(Bus.UP_CONFIG, true)
+        }
+        seek_text_letter_spacing.setOnSeekBarChangeListener(object :
+            SeekBar.OnSeekBarChangeListener {
+            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
+                letterSpacing = (progress - 5) / 10f
+                postEvent(Bus.UP_CONFIG, true)
+            }
+
+            override fun onStartTrackingTouch(seekBar: SeekBar?) {}
+            override fun onStopTrackingTouch(seekBar: SeekBar?) {}
+        })
+        iv_text_letter_spacing_add.onClick {
+            letterSpacing += 0.1f
+            seek_text_letter_spacing.progress = (letterSpacing * 10).toInt() + 5
+            postEvent(Bus.UP_CONFIG, true)
+        }
+        iv_text_letter_spacing_remove.onClick {
+            letterSpacing -= 0.1f
+            seek_text_letter_spacing.progress = (letterSpacing * 10).toInt() + 5
             postEvent(Bus.UP_CONFIG, true)
         }
         rg_page_anim.onCheckedChange { _, checkedId ->
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 2c84c4adf..0bb212cf4 100644
--- a/app/src/main/res/layout/dialog_read_book_style.xml
+++ b/app/src/main/res/layout/dialog_read_book_style.xml
@@ -84,10 +84,10 @@
             android:text="@string/text_size" />
 
         <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_text_size_add"
+            android:id="@+id/iv_text_size_remove"
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:src="@drawable/ic_add"
+            android:src="@drawable/ic_remove"
             android:background="?android:attr/selectableItemBackgroundBorderless"
             android:tint="@color/tv_text_default" />
 
@@ -100,10 +100,10 @@
             android:max="45" />
 
         <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_text_size_remove"
+            android:id="@+id/iv_text_size_add"
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:src="@drawable/ic_remove"
+            android:src="@drawable/ic_add"
             android:background="?android:attr/selectableItemBackgroundBorderless"
             android:tint="@color/tv_text_default" />
 
@@ -125,10 +125,10 @@
             android:text="@string/text_letter_spacing" />
 
         <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_text_letter_spacing_add"
+            android:id="@+id/iv_text_letter_spacing_remove"
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:src="@drawable/ic_add"
+            android:src="@drawable/ic_remove"
             android:background="?android:attr/selectableItemBackgroundBorderless"
             android:tint="@color/tv_text_default" />
 
@@ -141,10 +141,10 @@
             android:max="10" />
 
         <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_text_letter_spacing_remove"
+            android:id="@+id/iv_text_letter_spacing_add"
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:src="@drawable/ic_remove"
+            android:src="@drawable/ic_add"
             android:background="?android:attr/selectableItemBackgroundBorderless"
             android:tint="@color/tv_text_default" />
 
@@ -166,10 +166,10 @@
             android:text="@string/line_size" />
 
         <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_text_line_size_add"
+            android:id="@+id/iv_line_size_remove"
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:src="@drawable/ic_add"
+            android:src="@drawable/ic_remove"
             android:background="?android:attr/selectableItemBackgroundBorderless"
             android:tint="@color/tv_text_default" />
 
@@ -182,10 +182,10 @@
             android:max="50" />
 
         <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_line_size_remove"
+            android:id="@+id/iv_text_line_size_add"
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:src="@drawable/ic_remove"
+            android:src="@drawable/ic_add"
             android:background="?android:attr/selectableItemBackgroundBorderless"
             android:tint="@color/tv_text_default" />