diff --git a/src/pages/UI7/UI7.tsx b/src/pages/UI7/UI7.tsx
index 1b759fe..4ba526e 100644
--- a/src/pages/UI7/UI7.tsx
+++ b/src/pages/UI7/UI7.tsx
@@ -228,6 +228,7 @@ const UI7: React.FC = () => {
 
   useEffect(() => {
     localStorage.removeItem("consentSignatureList");
+    localStorage.removeItem("tongyishuSignedPdfUrls");
   }, []);
 
   useEffect(() => {
@@ -508,6 +509,37 @@ const UI7: React.FC = () => {
           if (tongyishuRes.Status !== 200) {
             throw new Error(tongyishuRes.Message || "提交知情同意书签名失败");
           }
+          // 保存签名后的知情同意书 PDF URL（可能返回多个）
+          try {
+            const returnedList = Array.isArray(
+              tongyishuRes.Data?.list_pdf_url
+            )
+              ? tongyishuRes.Data.list_pdf_url
+              : [];
+            const urls = returnedList
+              .map((item) =>
+                typeof item === "string" ? item : item?.pdf_url || ""
+              )
+              .filter((url): url is string => Boolean(url));
+            const storedRaw = localStorage.getItem("tongyishuSignedPdfUrls");
+            const storedList: string[] = storedRaw ? JSON.parse(storedRaw) : [];
+            const merged = [...storedList];
+            urls.forEach((url) => {
+              if (!merged.includes(url)) {
+                merged.push(url);
+              }
+            });
+            localStorage.setItem(
+              "tongyishuSignedPdfUrls",
+              JSON.stringify(merged)
+            );
+          } catch (cacheErr) {
+            window.electronAPI?.log(
+              "warn",
+              `[UI7] 知情同意书 PDF URL 缓存失败: ${(cacheErr as Error).message}`
+            );
+          }
+
         }
 
         if (currentStep >= pdfInfoList.length) {
diff --git a/src/pages/UI9/UI9.tsx b/src/pages/UI9/UI9.tsx
index 9b0a809..70405ad 100644
--- a/src/pages/UI9/UI9.tsx
+++ b/src/pages/UI9/UI9.tsx
@@ -23,6 +23,7 @@ const UI9: React.FC = () => {
     localStorage.removeItem("package_code");
     localStorage.removeItem("consentSignatureList");
     localStorage.removeItem("consentSignature");
+    localStorage.removeItem("tongyishuSignedPdfUrls");
     navigate("/");
   }, [navigate]);