diff --git a/app/src/main/java/io/legado/app/help/JsExtensions.kt b/app/src/main/java/io/legado/app/help/JsExtensions.kt
index 2d3e17208..c307dd82d 100644
--- a/app/src/main/java/io/legado/app/help/JsExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/JsExtensions.kt
@@ -11,6 +11,7 @@ import io.legado.app.model.Debug
 import io.legado.app.model.analyzeRule.AnalyzeUrl
 import io.legado.app.model.analyzeRule.QueryTTF
 import io.legado.app.utils.*
+import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.async
 import kotlinx.coroutines.runBlocking
 import org.jsoup.Connection
@@ -48,7 +49,7 @@ interface JsExtensions {
     fun ajaxAll(urlList: List<String>): Array<StrResponse?> {
         return runBlocking {
             val asyncArray = Array(urlList.size) {
-                async {
+                async(IO) {
                     val url = urlList[it]
                     val analyzeUrl = AnalyzeUrl(url)
                     analyzeUrl.getStrResponse(url)
diff --git a/app/src/main/java/io/legado/app/model/webBook/BookChapterList.kt b/app/src/main/java/io/legado/app/model/webBook/BookChapterList.kt
index 4ff934735..2e7ebfb38 100644
--- a/app/src/main/java/io/legado/app/model/webBook/BookChapterList.kt
+++ b/app/src/main/java/io/legado/app/model/webBook/BookChapterList.kt
@@ -76,10 +76,10 @@ object BookChapterList {
                 Debug.log(bookSource.bookSourceUrl, "◇目录总页数:${nextUrlList.size}")
             }
             else -> {
-                Debug.log(bookSource.bookSourceUrl, "◇目录总页数:${nextUrlList.size}")
+                Debug.log(bookSource.bookSourceUrl, "◇并发解析目录,总页数:${chapterData.nextUrl.size}")
                 withContext(IO) {
                     val asyncArray = Array(chapterData.nextUrl.size) {
-                        async {
+                        async(IO) {
                             val urlStr = chapterData.nextUrl[it]
                             val analyzeUrl = AnalyzeUrl(
                                 ruleUrl = urlStr,