diff --git a/app/src/main/java/io/legado/app/data/dao/ReplaceRuleDao.kt b/app/src/main/java/io/legado/app/data/dao/ReplaceRuleDao.kt
index f65588378..b291ac968 100644
--- a/app/src/main/java/io/legado/app/data/dao/ReplaceRuleDao.kt
+++ b/app/src/main/java/io/legado/app/data/dao/ReplaceRuleDao.kt
@@ -30,9 +30,18 @@ interface ReplaceRuleDao {
     @Query("SELECT * FROM replace_rules WHERE id in (:ids)")
     fun findByIds(vararg ids: Int): List<ReplaceRule>
 
-    @Query("SELECT * FROM replace_rules WHERE isEnabled = 1 AND scope LIKE '%' || :scope || '%'")
+    @Query(
+        """SELECT * FROM replace_rules WHERE isEnabled = 1 
+        AND (scope LIKE '%' || :scope || '%' or scope = null or scope = '')"""
+    )
     fun findEnabledByScope(scope: String): List<ReplaceRule>
 
+    @Query(
+        """SELECT * FROM replace_rules WHERE isEnabled = 1 
+        AND (scope LIKE '%' || :name || '%' or scope LIKE '%' || :origin || '%' or scope = null or scope = '')"""
+    )
+    fun findEnabledByScope(name: String, origin: String): List<ReplaceRule>
+
     @get:Query("SELECT COUNT(*) - SUM(isEnabled) FROM replace_rules")
     val summary: Int
 
diff --git a/app/src/main/java/io/legado/app/data/dao/SearchBookDao.kt b/app/src/main/java/io/legado/app/data/dao/SearchBookDao.kt
index 5d928c42a..a8b61a068 100644
--- a/app/src/main/java/io/legado/app/data/dao/SearchBookDao.kt
+++ b/app/src/main/java/io/legado/app/data/dao/SearchBookDao.kt
@@ -12,13 +12,11 @@ import io.legado.app.data.entities.SearchShow
 interface SearchBookDao {
 
     @Query(
-        """
-                SELECT name, author, min(time) time, max(kind) kind, max(coverUrl) coverUrl,max(intro) intro, max(wordCount) wordCount, 
-                max(latestChapterTitle) latestChapterTitle, count(origin) originCount 
-                FROM searchBooks where time >= :time
-                group by name, author
-                order by case when name = :key then 1 when author = :key then 2 when name like '%'+:key+'%' then 3 when author like '%'+:key+'%' then 4 else 5 end, time
-            """
+        """SELECT name, author, min(time) time, max(kind) kind, max(coverUrl) coverUrl,max(intro) intro, max(wordCount) wordCount, 
+        max(latestChapterTitle) latestChapterTitle, count(origin) originCount 
+        FROM searchBooks where time >= :time
+        group by name, author
+        order by case when name = :key then 1 when author = :key then 2 when name like '%'||:key||'%' then 3 when author like '%'||:key||'%' then 4 else 5 end, time"""
     )
     fun observeShow(key: String, time: Long): DataSource.Factory<Int, SearchShow>
 
diff --git a/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt b/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
index e43699c36..65b070d57 100644
--- a/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
+++ b/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
@@ -23,6 +23,4 @@ data class ReplaceRule(
     var isRegex: Boolean = true,
     @ColumnInfo(name = "sortOrder")
     var order: Int = 0
-) : Parcelable
-
-
+) : Parcelable
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/BookHelp.kt b/app/src/main/java/io/legado/app/help/BookHelp.kt
index 83d8de8e5..9fc9206d1 100644
--- a/app/src/main/java/io/legado/app/help/BookHelp.kt
+++ b/app/src/main/java/io/legado/app/help/BookHelp.kt
@@ -3,6 +3,8 @@ package io.legado.app.help
 import io.legado.app.App
 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.getPrefInt
 import io.legado.app.utils.getPrefString
 import java.io.BufferedWriter
 import java.io.File
@@ -11,10 +13,12 @@ import java.io.IOException
 
 object BookHelp {
 
-    private var downloadPath = App.INSTANCE.getPrefString("downloadPath") ?: App.INSTANCE.getExternalFilesDir(null)
+    private var downloadPath =
+        App.INSTANCE.getPrefString("downloadPath") ?: App.INSTANCE.getExternalFilesDir(null)
 
     fun upDownloadPath() {
-        downloadPath = App.INSTANCE.getPrefString("downloadPath") ?: App.INSTANCE.getExternalFilesDir(null)
+        downloadPath =
+            App.INSTANCE.getPrefString("downloadPath") ?: App.INSTANCE.getExternalFilesDir(null)
     }
 
     fun saveContent(book: Book, bookChapter: BookChapter, content: String) {
@@ -69,7 +73,8 @@ object BookHelp {
 
     private fun getChapterPath(book: Book, bookChapter: BookChapter): String {
         val bookFolder = formatFolderName(book.name + book.bookUrl)
-        val chapterFile = String.format("%05d-%s", bookChapter.index, formatFolderName(bookChapter.title))
+        val chapterFile =
+            String.format("%05d-%s", bookChapter.index, formatFolderName(bookChapter.title))
         return "$downloadPath${File.separator}book_cache${File.separator}$bookFolder${File.separator}$chapterFile.nb"
     }
 
@@ -88,4 +93,35 @@ object BookHelp {
     fun getDurChapterIndexByChapterName() {
 
     }
+
+    var bookName: String? = null
+    var bookOrigin: String? = null
+    var replaceRules: List<ReplaceRule> = arrayListOf()
+
+    fun disposeContent(name: String, origin: String?, content: String, enableReplace: Boolean)
+            : String {
+        var c = content
+        synchronized(this) {
+            if (enableReplace && (bookName != name || bookOrigin != origin)) {
+                replaceRules = if (origin.isNullOrEmpty()) {
+                    App.db.replaceRuleDao().findEnabledByScope(name)
+                } else {
+                    App.db.replaceRuleDao().findEnabledByScope(name, origin)
+                }
+            }
+        }
+        for (item in replaceRules) {
+            item.pattern?.let {
+                if (it.isNotEmpty()) {
+                    c = if (item.isRegex) {
+                        c.replace(it.toRegex(), item.replacement ?: "")
+                    } else {
+                        c.replace(it, item.replacement ?: "")
+                    }
+                }
+            }
+        }
+        val indent = App.INSTANCE.getPrefInt("textIndent", 2)
+        return c.replace("\\s*\\n+\\s*".toRegex(), "\n" + "　".repeat(indent))
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/readbook/ReadBookViewModel.kt b/app/src/main/java/io/legado/app/ui/readbook/ReadBookViewModel.kt
index 443543bc4..7fe1db4fc 100644
--- a/app/src/main/java/io/legado/app/ui/readbook/ReadBookViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/readbook/ReadBookViewModel.kt
@@ -197,8 +197,16 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
     }
 
     private fun contentLoadFinish(chapter: BookChapter, content: String) {
-        if (chapter.index in durChapterIndex - 1..durChapterIndex + 1) {
-            callBack?.contentLoadFinish(chapter, content)
+        execute {
+            if (chapter.index in durChapterIndex - 1..durChapterIndex + 1) {
+                val c = BookHelp.disposeContent(
+                    bookData.value?.name ?: "",
+                    webBook?.bookSource?.bookSourceUrl,
+                    content,
+                    bookData.value?.useReplaceRule ?: true
+                )
+                callBack?.contentLoadFinish(chapter, c)
+            }
         }
     }