diff --git a/app/src/main/java/io/legado/app/model/webBook/BookContent.kt b/app/src/main/java/io/legado/app/model/webBook/BookContent.kt
index 5347442a3..a90149daf 100644
--- a/app/src/main/java/io/legado/app/model/webBook/BookContent.kt
+++ b/app/src/main/java/io/legado/app/model/webBook/BookContent.kt
@@ -111,6 +111,7 @@ object BookContent {
             }
         }
         var contentStr = content.toString()
+        //全文替换
         val replaceRegex = contentRule.replaceRegex
         if (!replaceRegex.isNullOrEmpty()) {
             contentStr = analyzeRule.getString(replaceRegex, contentStr)