diff --git a/electron/main.js b/electron/main.js
index bef322c..f7d8eb9 100644
--- a/electron/main.js
+++ b/electron/main.js
@@ -310,7 +310,7 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl, printOptions = {}) => {
     const printOptions_ptp = {
       printer: targetPrinterName || undefined,
       silent: true, // 静默打印
-      duplex: duplexMode || false, // 双面打印选项
+      side: duplexMode ? "duplex" : "simplex",
     };
     await ptp.print(pdfFilePath, printOptions_ptp);