diff --git a/backend/internal/api/libraries.go b/backend/internal/api/libraries.go
index 78e20cc..cd13683 100644
--- a/backend/internal/api/libraries.go
+++ b/backend/internal/api/libraries.go
@@ -26,6 +26,10 @@ func (a *api) libRoot(c *gin.Context, lib store.Library) (string, bool) {
 		err(c, http.StatusForbidden, "forbidden", "library root outside books dir")
 		return "", false
 	}
+	if e := os.MkdirAll(root, 0o755); e != nil { // 注册库时目录可能尚未落盘,自愈
+		err(c, http.StatusInternalServerError, "internal", "library root")
+		return "", false
+	}
 	return root, true
 }
 
diff --git a/web/src/pages/admin/Libraries.tsx b/web/src/pages/admin/Libraries.tsx
index 712168a..0b2cb8f 100644
--- a/web/src/pages/admin/Libraries.tsx
+++ b/web/src/pages/admin/Libraries.tsx
@@ -83,7 +83,7 @@ export default function AdminLibraries() {
                   }}
                   type="file"
                   multiple
-                  accept=".cbz,.pdf,.epub,.txt,.md"
+                  accept=".cbz,.zip,.pdf,.epub,.txt,.md"
                   className="hidden"
                   onChange={(e) => {
                     void onFiles(l.id, e.target.files);
@@ -93,7 +93,7 @@ export default function AdminLibraries() {
                 <button className={btn} onClick={() => fileRefs.current[l.id]?.click()}>
                   上传文件
                 </button>
-                <span className="text-xs text-zinc-600">白名单:cbz/pdf/epub/txt/md</span>
+                <span className="text-xs text-zinc-600">白名单:cbz/zip/pdf/epub/txt/md</span>
               </div>
             </div>
           ))}