diff --git a/app/src/main/java/io/legado/app/help/ContentProcessor.kt b/app/src/main/java/io/legado/app/help/ContentProcessor.kt
index b19cfa4df..82eba7c36 100644
--- a/app/src/main/java/io/legado/app/help/ContentProcessor.kt
+++ b/app/src/main/java/io/legado/app/help/ContentProcessor.kt
@@ -6,6 +6,7 @@ import io.legado.app.data.appDb
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.data.entities.ReplaceRule
+import io.legado.app.utils.StringUtils
 import io.legado.app.utils.toastOnUi
 import splitties.init.appCtx
 import java.lang.ref.WeakReference
@@ -16,8 +17,6 @@ class ContentProcessor private constructor(
 ) {
 
     companion object {
-        private val fbsArr =
-            arrayOf("\\", "$", "(", ")", "*", "+", ".", "[", "]", "?", "^", "{", "}", "|")
         private val processors = hashMapOf<String, WeakReference<ContentProcessor>>()
 
         fun get(bookName: String, bookOrigin: String): ContentProcessor {
@@ -67,13 +66,9 @@ class ContentProcessor private constructor(
         var mContent = content
         if (includeTitle) {
             //去除重复标题
-            var name = book.name
-            var title = chapter.title
             try {
-                fbsArr.forEach {
-                    name = name.replace(it, "\\" + it)
-                    title = title.replace(it, "\\" + it)
-                }
+                val name = StringUtils.escapeToRegex(book.name)
+                val title = StringUtils.escapeToRegex(chapter.title)
                 val titleRegex = "^(\\s|\\p{P}|${name})*${title}(\\s|\\p{P})+".toRegex()
                 mContent = mContent.replace(titleRegex, "")
             } catch (e: Exception) {
diff --git a/app/src/main/java/io/legado/app/utils/StringUtils.kt b/app/src/main/java/io/legado/app/utils/StringUtils.kt
index 538e5482f..0bb0f025f 100644
--- a/app/src/main/java/io/legado/app/utils/StringUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/StringUtils.kt
@@ -41,7 +41,9 @@ object StringUtils {
             return map
         }
 
-    //将时间转换成日期
+    /**
+     * 将时间转换成日期
+     */
     fun dateConvert(time: Long, pattern: String): String {
         val date = Date(time)
 
@@ -50,7 +52,9 @@ object StringUtils {
         return format.format(date)
     }
 
-    //将日期转换成昨天、今天、明天
+    /**
+     * 将日期转换成昨天、今天、明天
+     */
     fun dateConvert(source: String, pattern: String): String {
         @SuppressLint("SimpleDateFormat")
         val format = SimpleDateFormat(pattern)
@@ -69,12 +73,8 @@ object StringUtils {
             if (oldHour == 0) {
                 //比日期:昨天今天和明天
                 return when {
-                    difDate == 0L -> {
-                        "今天"
-                    }
-                    difDate < DAY_OF_YESTERDAY -> {
-                        "昨天"
-                    }
+                    difDate == 0L -> "今天"
+                    difDate < DAY_OF_YESTERDAY -> "昨天"
                     else -> {
                         @SuppressLint("SimpleDateFormat")
                         val convertFormat = SimpleDateFormat("yyyy-MM-dd")
@@ -97,10 +97,12 @@ object StringUtils {
         }.onFailure {
             it.printOnDebug()
         }
-
         return ""
     }
 
+    /**
+     * 单位转换
+     */
     fun toSize(length: Long): String {
         if (length <= 0) return "0"
         val units = arrayOf("b", "kb", "M", "G", "T")
@@ -112,6 +114,9 @@ object StringUtils {
             .format(length / 1024.0.pow(digitGroups.toDouble())) + " " + units[digitGroups]
     }
 
+    /**
+     * 首字母大写
+     */
     @SuppressLint("DefaultLocale")
     fun toFirstCapital(str: String): String {
         return str.substring(0, 1).uppercase(Locale.getDefault()) + str.substring(1)
@@ -140,7 +145,9 @@ object StringUtils {
         return String(c)
     }
 
-    //功能：字符串全角转换为半角
+    /**
+     * 字符串全角转换为半角
+     */
     fun fullToHalf(input: String): String {
         val c = input.toCharArray()
         for (i in c.indices) {
@@ -157,6 +164,9 @@ object StringUtils {
         return String(c)
     }
 
+    /**
+     * 中文大写数字转数字
+     */
     fun chineseNumToInt(chNum: String): Int {
         var result = 0
         var tmp = 0
@@ -207,6 +217,9 @@ object StringUtils {
         }.getOrDefault(-1)
     }
 
+    /**
+     * 字符串转数字
+     */
     fun stringToInt(str: String?): Int {
         if (str != null) {
             val num = fullToHalf(str).replace("\\s+".toRegex(), "")
@@ -219,12 +232,18 @@ object StringUtils {
         return -1
     }
 
+    /**
+     * 是否包含数字
+     */
     fun isContainNumber(company: String): Boolean {
         val p = Pattern.compile("[0-9]+")
         val m = p.matcher(company)
         return m.find()
     }
 
+    /**
+     * 是否数字
+     */
     fun isNumeric(str: String): Boolean {
         val pattern = Pattern.compile("[0-9]+")
         val isNum = pattern.matcher(str)
@@ -249,7 +268,9 @@ object StringUtils {
         return wordsS
     }
 
-    // 移除字符串首尾空字符的高效方法(利用ASCII值判断,包括全角空格)
+    /**
+     * 移除字符串首尾空字符的高效方法(利用ASCII值判断,包括全角空格)
+     */
     fun trim(s: String): String {
         if (isEmpty(s)) return ""
         var start = 0
@@ -265,6 +286,9 @@ object StringUtils {
         return if (start > 0 || end < len) s.substring(start, end) else s
     }
 
+    /**
+     * 重复字符串
+     */
     fun repeat(str: String, n: Int): String {
         val stringBuilder = StringBuilder()
         for (i in 0 until n) {
@@ -273,6 +297,9 @@ object StringUtils {
         return stringBuilder.toString()
     }
 
+    /**
+     * 移除UTF头
+     */
     fun removeUTFCharacters(data: String?): String? {
         if (data == null) return null
         val p = Pattern.compile("\\\\u(\\p{XDigit}{4})")
@@ -286,6 +313,17 @@ object StringUtils {
         return buf.toString()
     }
 
+    private val regexNeedEscaped =
+        arrayOf("\\", "$", "(", ")", "*", "+", ".", "[", "]", "?", "^", "{", "}", "|")
+
+    fun escapeToRegex(text: String): String {
+        var str = text
+        regexNeedEscaped.forEach {
+            str = str.replace(it, "\\" + it)
+        }
+        return str
+    }
+
     fun byteToHexString(bytes: ByteArray?): String {
         if (bytes == null) return ""
         val sb = StringBuilder(bytes.size * 2)