diff --git a/src/components/plans/ShareModal.tsx b/src/components/plans/ShareModal.tsx
index bca19a8..7dbb2ac 100644
--- a/src/components/plans/ShareModal.tsx
+++ b/src/components/plans/ShareModal.tsx
@@ -66,8 +66,10 @@ export function ShareModal({
   const shortLinkGenerated = useRef(false);
   
   // 新流程状态
-  const [hasRelationship, setHasRelationship] = useState<boolean | null>(null);
-  const [isCheckingRelationship, setIsCheckingRelationship] = useState(false);
+  // When no factoryId (unlinked plan), we already know there's no relationship
+  // so initialize directly to avoid a blank-overlay flash before useEffect runs.
+  const [hasRelationship, setHasRelationship] = useState<boolean | null>(factoryId ? null : false);
+  const [isCheckingRelationship, setIsCheckingRelationship] = useState(!!factoryId);
   const [existingLink, setExistingLink] = useState<ShareLinkStatus | null>(null);
   const [isGeneratingLink, setIsGeneratingLink] = useState(false);
   const [pushSuccess, setPushSuccess] = useState(false);