diff --git a/NEWS.md b/NEWS.md
index 05836015..87aba894 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -5,6 +5,7 @@ Red Panda C++ Version 2.17
   - enhancement: Add "New Text File" in the File menu
   - enhancement: Add "address" in the memory view's mouse tip.
   - enhancement: Show mousetip for numbers in the GNU assembly file. 
+  - enhancement: Open offline gnu as/x86 assembly manual if exists.
 
 Red Panda C++ Version 2.16
 
diff --git a/RedPandaIDE/RedPandaIDE.pro b/RedPandaIDE/RedPandaIDE.pro
index bd974ac9..609c1404 100644
--- a/RedPandaIDE/RedPandaIDE.pro
+++ b/RedPandaIDE/RedPandaIDE.pro
@@ -12,9 +12,12 @@ isEmpty(APP_VERSION) {
 }
 
 contains(QMAKE_HOST.arch, x86_64):{
-    contains(QMAKE_HOST.arch, x86_64):{
-        DEFINES += ARCH_X86_64=1
-    } else : {
+    DEFINES += ARCH_X86_64=1
+} else: {
+    contains(QMAKE_HOST.arch, i386):{
+        DEFINES += ARCH_X86=1
+    }
+    contains(QMAKE_HOST.arch, i686):{
         DEFINES += ARCH_X86=1
     }
 }
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index adeae9a4..5f7c63ff 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -419,7 +419,7 @@ MainWindow::MainWindow(QWidget *parent)
         ui->actionIA_32_Assembly_Language_Reference_Manual->setVisible(true);
         ui->actionx86_Assembly_Language_Reference_Manual->setVisible(false);
 #elif defined(ARCH_X86_64)
-        ui->actionIA_32_Assembly_Language_Reference_Manual->setVisible(true);
+        ui->actionIA_32_Assembly_Language_Reference_Manual->setVisible(false);
         ui->actionx86_Assembly_Language_Reference_Manual->setVisible(true);
 #else
         ui->actionIA_32_Assembly_Language_Reference_Manual->setVisible(false);
@@ -9610,20 +9610,40 @@ void MainWindow::on_actionNew_GAS_File_triggered()
 
 void MainWindow::on_actionGNU_Assembler_Manual_triggered()
 {
+    QFileInfo fileInfo{includeTrailingPathDelimiter(pSettings->dirs().appDir())+
+                       QString{"Using GNU Assembler.pdf"}};
+    if (fileInfo.exists()) {
+        QDesktopServices::openUrl(QUrl::fromLocalFile(fileInfo.absoluteFilePath()));
+        return;
+    }
     QDesktopServices::openUrl(QUrl("https://sourceware.org/binutils/docs/as/index.html"));
 }
 
+#ifdef ARCH_X86_64
 void MainWindow::on_actionx86_Assembly_Language_Reference_Manual_triggered()
 {
+    QFileInfo fileInfo{includeTrailingPathDelimiter(pSettings->dirs().appDir())+
+                       QString{"x86 Assembly Language Reference Manual.pdf"}};
+    if (fileInfo.exists()) {
+        QDesktopServices::openUrl(QUrl::fromLocalFile(fileInfo.absoluteFilePath()));
+        return;
+    }
     QDesktopServices::openUrl(QUrl("https://docs.oracle.com/cd/E53394_01/html/E54851/index.html"));
 }
+#endif
 
-
+#ifdef ARCH_X86
 void MainWindow::on_actionIA_32_Assembly_Language_Reference_Manual_triggered()
 {
+    QFileInfo fileInfo{includeTrailingPathDelimiter(pSettings->dirs().appDir())+
+                       QString{"IA-32 Assembly Language Reference Manual.pdf"}};
+    if (fileInfo.exists()) {
+        QDesktopServices::openUrl(QUrl::fromLocalFile(fileInfo.absoluteFilePath()));
+        return;
+    }
     QDesktopServices::openUrl(QUrl("https://docs.oracle.com/cd/E19455-01/806-3773/index.html"));
 }
-
+#endif
 
 void MainWindow::on_actionAdd_Watchpoint_triggered()
 {
diff --git a/RedPandaIDE/mainwindow.h b/RedPandaIDE/mainwindow.h
index 805b340b..94000476 100644
--- a/RedPandaIDE/mainwindow.h
+++ b/RedPandaIDE/mainwindow.h
@@ -794,9 +794,12 @@ private slots:
 
     void on_actionGNU_Assembler_Manual_triggered();
 
+#ifdef ARCH_X86_64
     void on_actionx86_Assembly_Language_Reference_Manual_triggered();
-
+#endif
+#ifdef ARCH_X86
     void on_actionIA_32_Assembly_Language_Reference_Manual_triggered();
+#endif
 
     void on_actionAdd_Watchpoint_triggered();