diff --git a/electron/main.js b/electron/main.js
index 5334fee..7bcde9f 100644
--- a/electron/main.js
+++ b/electron/main.js
@@ -300,16 +300,18 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl, printOptions = {}) => {
       throw new Error(`PDF文件大小异常（${stats.size} bytes），可能文件损坏`);
     }
 
+    const duplexMode = printOptions?.duplex;
     log.info(
       `准备打印PDF: ${pdfFilePath}, 打印机: ${
         targetPrinterName || "默认打印机"
-      }`
+      }, 双面打印: ${duplexMode ? "是" : "否"}`
     );
 
     // 使用 pdf-to-printer 打印
     const printOptions_ptp = {
       printer: targetPrinterName || undefined,
       silent: true, // 静默打印
+      duplex: duplexMode || false, // 双面打印选项
     };
 
     await ptp.print(pdfFilePath, printOptions_ptp);
diff --git a/src/components/DuplexToggle.css b/src/components/DuplexToggle.css
new file mode 100644
index 0000000..cb56ce5
--- /dev/null
+++ b/src/components/DuplexToggle.css
@@ -0,0 +1,32 @@
+.duplex-toggle {
+  display: flex;
+  align-items: center;
+  cursor: pointer;
+  user-select: none;
+  gap: 10px;
+  transition: opacity 0.2s ease;
+}
+
+.duplex-toggle:hover {
+  opacity: 0.8;
+}
+
+.duplex-toggle-icon {
+  width: 24px;
+  height: 24px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 4px;
+  font-size: 16px;
+  transition: all 0.2s ease;
+  flex-shrink: 0;
+  font-family: NotoSansCJKsc-Medium;
+}
+
+
+.duplex-toggle-label {
+  font-size: 20px;
+  font-family: NotoSansCJKsc-Regular;
+  color: rgba(0, 45, 93, 1);
+}
\ No newline at end of file
diff --git a/src/components/DuplexToggle.tsx b/src/components/DuplexToggle.tsx
new file mode 100644
index 0000000..f9454ca
--- /dev/null
+++ b/src/components/DuplexToggle.tsx
@@ -0,0 +1,30 @@
+import React from "react";
+import "./DuplexToggle.css";
+
+interface DuplexToggleProps {
+    checked: boolean;
+    onChange: (checked: boolean) => void;
+    label?: string;
+}
+
+const DuplexToggle: React.FC<DuplexToggleProps> = ({
+    checked,
+    onChange,
+    label = "",
+}) => {
+    const handleClick = () => {
+        onChange(!checked);
+    };
+
+    return (
+        <div className="duplex-toggle" onClick={handleClick}>
+            <div className={`duplex-toggle-icon ${checked ? "checked" : "unchecked"}`}>
+                {checked ? "双" : "单"}
+            </div>
+            <span className="duplex-toggle-label">{label}</span>
+        </div>
+    );
+};
+
+export default DuplexToggle;
+
diff --git a/src/electron.d.ts b/src/electron.d.ts
index c035364..c64da7f 100644
--- a/src/electron.d.ts
+++ b/src/electron.d.ts
@@ -14,7 +14,7 @@ interface ElectronAPI {
   ) => Promise<{ success: boolean; data?: string; error?: string }>;
   printPdf: (
     pdfUrl: string,
-    options?: { printerName?: string }
+    options?: { printerName?: string; duplex?: boolean }
   ) => Promise<{ success: boolean; error?: string }>;
   getPrinters: () => Promise<{
     success: boolean;
diff --git a/src/pages/UI8/UI8.css b/src/pages/UI8/UI8.css
index a751257..e33e24a 100644
--- a/src/pages/UI8/UI8.css
+++ b/src/pages/UI8/UI8.css
@@ -348,4 +348,11 @@
 .ui8-printer-error {
   font-size: 22px;
   color: #b12651;
+}
+
+.ui8-duplex-option {
+  margin-top: 15px;
+  display: flex;
+  justify-content: flex-end;
+  align-items: center;
 }
\ No newline at end of file
diff --git a/src/pages/UI8/UI8.tsx b/src/pages/UI8/UI8.tsx
index 1a9bfb7..db346b4 100644
--- a/src/pages/UI8/UI8.tsx
+++ b/src/pages/UI8/UI8.tsx
@@ -5,11 +5,13 @@ import "./UI8.css";
 import "../../assets/css/basic.css";
 import { useNavigate } from "react-router-dom";
 import ConfirmButton from "../../components/ConfirmButton";
+import DuplexToggle from "../../components/DuplexToggle";
 import ui8A from "../../assets/ui8A.png";
 import ui8B from "../../assets/ui8B.png";
 import { getDaojiandanPdf } from "../../api/hisApi";
 
 const PREFERRED_PRINTER_KEY = "preferredPrinterName";
+const PREFERRED_DUPLEX_KEY = "preferredDuplex";
 
 type PrinterInfo = ElectronPrinterInfo;
 
@@ -74,6 +76,7 @@ const UI8: React.FC = () => {
   const printerDropdownRef = useRef<HTMLDivElement | null>(null);
   const pdfContainerRef = useRef<HTMLDivElement | null>(null);
   const [isRightSectionHidden, setIsRightSectionHidden] = useState(false);
+  const [duplexEnabled, setDuplexEnabled] = useState<boolean>(false);
 
   const getExamId = () => {
     const storedId = localStorage.getItem("selectedExamId");
@@ -221,6 +224,12 @@ const UI8: React.FC = () => {
 
     fetchPrinters();
 
+    // 恢复双面打印设置
+    const storedDuplex = localStorage.getItem(PREFERRED_DUPLEX_KEY);
+    if (storedDuplex === "true") {
+      setDuplexEnabled(true);
+    }
+
     return () => {
       isMounted = false;
     };
@@ -343,7 +352,10 @@ const UI8: React.FC = () => {
 
       const printResult = await window.electronAPI.printPdf(
         printData,
-        selectedPrinter ? { printerName: selectedPrinter } : undefined
+        {
+          ...(selectedPrinter ? { printerName: selectedPrinter } : {}),
+          duplex: duplexEnabled,
+        }
       );
 
       if (!printResult.success) {
@@ -363,7 +375,7 @@ const UI8: React.FC = () => {
     } finally {
       setIsPrinting(false);
     }
-  }, [originPdfUrls, pdfFiles, printers.length, selectedPrinter, navigate, isPrinting]);
+  }, [originPdfUrls, pdfFiles, printers.length, selectedPrinter, navigate, isPrinting, duplexEnabled]);
 
   const handlePageCountUpdate = useCallback((index: number, numPages: number) => {
     window.electronAPI?.log("info", `[UI8] PDF渲染成功 (index=${index})，共 ${numPages} 页`);
@@ -399,6 +411,17 @@ const UI8: React.FC = () => {
             }
           }}
         >
+          <DuplexToggle
+            checked={duplexEnabled}
+            onChange={(enabled) => {
+              setDuplexEnabled(enabled);
+              localStorage.setItem(PREFERRED_DUPLEX_KEY, enabled.toString());
+              window.electronAPI?.log(
+                "info",
+                `[UI8] 双面打印设置为: ${enabled ? "启用" : "禁用"}`
+              );
+            }}
+          />
           <span>
             {printersLoading
               ? "打印机加载中..."
@@ -436,6 +459,7 @@ const UI8: React.FC = () => {
         {printerError && (
           <div className="ui8-printer-error">{printerError}</div>
         )}
+
       </div>
 
       <div className="basic-white-block">
diff --git a/src/pages/UI9/UI9.tsx b/src/pages/UI9/UI9.tsx
index 76b0601..a838e8c 100644
--- a/src/pages/UI9/UI9.tsx
+++ b/src/pages/UI9/UI9.tsx
@@ -27,8 +27,8 @@ const UI9: React.FC = () => {
     navigate("/");
   }, [navigate]);
 
-  const [countdown, setCountdown] = useState(30);
-  const [backTime, setBackTime] = useState("确认(30S)");
+  const [countdown, setCountdown] = useState(45);
+  const [backTime, setBackTime] = useState("确认(45S)");
 
   useEffect(() => {
     if (countdown > 0) {