diff --git a/popiart-node-interaction-enhancement-implementation.md b/popiart-node-interaction-enhancement-implementation.md
index 98ee274b..ab58c2e4 100644
--- a/popiart-node-interaction-enhancement-implementation.md
+++ b/popiart-node-interaction-enhancement-implementation.md
@@ -2044,3 +2044,15 @@ npm.cmd run test:run -- VideoInputNode.test.tsx WorkflowCanvas.test.tsx ImageNod
 ```
 
 结果：5 个测试文件、87 个测试通过。
+## 2026-04-30 更新：首尾帧目标节点改为视频节点
+
+本次调整“首尾帧生成视频”的建链目标：
+
+1. `首帧` 和 `尾帧` 仍然都是空的视频上传节点，用户后续自行上传视频。
+2. 右侧被连接的目标也改为空的 `videoInput` 视频节点，不再创建 `generateVideo` 节点。
+3. 自动连线保持 `video -> video`，形成 `首帧/尾帧 -> 视频节点` 的纯视频节点链路。
+
+验证：
+```powershell
+npm.cmd run test:run -- VideoInputNode.test.tsx WorkflowCanvas.test.tsx
+```
diff --git a/src/components/WorkflowCanvas.tsx b/src/components/WorkflowCanvas.tsx
index 60fada00..40226bea 100644
--- a/src/components/WorkflowCanvas.tsx
+++ b/src/components/WorkflowCanvas.tsx
@@ -2218,7 +2218,8 @@ export function WorkflowCanvas() {
       )}
 
       {/* Welcome Modal */}
-      {showQuickstart && (
+      {/* 新建项目设置弹窗打开时不再同时挂载欢迎弹窗，避免两个弹窗状态互相触发。 */}
+      {showQuickstart && !showNewProjectSetup && (
         <WelcomeModal
           onWorkflowGenerated={async (workflow, directoryPath) => {
             await loadWorkflow(workflow, directoryPath);
diff --git a/src/components/__tests__/VideoInputNode.test.tsx b/src/components/__tests__/VideoInputNode.test.tsx
index 997de9c0..898f4d8d 100644
--- a/src/components/__tests__/VideoInputNode.test.tsx
+++ b/src/components/__tests__/VideoInputNode.test.tsx
@@ -8,6 +8,7 @@ const KEYFRAMES_LABEL = "\u9996\u5c3e\u5e27\u751f\u6210\u89c6\u9891";
 const FIRST_FRAME_LABEL = "\u9996\u5e27\u751f\u6210\u89c6\u9891";
 const FIRST_FRAME_NODE_LABEL = "\u9996\u5e27";
 const LAST_FRAME_NODE_LABEL = "\u5c3e\u5e27";
+const TARGET_VIDEO_NODE_LABEL = "\u89c6\u9891\u8282\u70b9";
 
 const mockUpdateNodeData = vi.fn();
 let addNodeSequence = 0;
@@ -92,7 +93,7 @@ describe("VideoInputNode", () => {
     expect(screen.getByRole("button", { name: FIRST_FRAME_LABEL })).toBeInTheDocument();
   });
 
-  it("labels the current node as first frame and links it to a generate video node", () => {
+  it("labels the current node as first frame and links it to a target video node", () => {
     render(
       <TestWrapper>
         <VideoInputNode {...defaultProps} />
@@ -104,16 +105,20 @@ describe("VideoInputNode", () => {
     expect(mockUpdateNodeData).toHaveBeenCalledWith("video-1", {
       label: FIRST_FRAME_NODE_LABEL,
     });
-    expect(mockAddNode).toHaveBeenCalledWith("generateVideo", { x: 600, y: 160 });
+    expect(mockAddNode).toHaveBeenCalledWith(
+      "videoInput",
+      { x: 600, y: 160 },
+      { label: TARGET_VIDEO_NODE_LABEL }
+    );
     expect(mockOnConnect).toHaveBeenCalledWith({
       source: "video-1",
       sourceHandle: "video",
-      target: "generateVideo-1",
+      target: "videoInput-1",
       targetHandle: "video",
     });
   });
 
-  it("creates an empty last-frame video node and links both videos to a generate video node", () => {
+  it("creates empty last-frame and target video nodes, then links both source videos", () => {
     render(
       <TestWrapper>
         <VideoInputNode {...defaultProps} />
@@ -130,17 +135,21 @@ describe("VideoInputNode", () => {
       { x: 120, y: 492 },
       { label: LAST_FRAME_NODE_LABEL }
     );
-    expect(mockAddNode).toHaveBeenCalledWith("generateVideo", { x: 600, y: 316 });
+    expect(mockAddNode).toHaveBeenCalledWith(
+      "videoInput",
+      { x: 600, y: 326 },
+      { label: TARGET_VIDEO_NODE_LABEL }
+    );
     expect(mockOnConnect).toHaveBeenCalledWith({
       source: "video-1",
       sourceHandle: "video",
-      target: "generateVideo-2",
+      target: "videoInput-2",
       targetHandle: "video",
     });
     expect(mockOnConnect).toHaveBeenCalledWith({
       source: "videoInput-1",
       sourceHandle: "video",
-      target: "generateVideo-2",
+      target: "videoInput-2",
       targetHandle: "video",
     });
   });
diff --git a/src/components/nodes/VideoInputNode.tsx b/src/components/nodes/VideoInputNode.tsx
index c42171f2..525c6ea7 100644
--- a/src/components/nodes/VideoInputNode.tsx
+++ b/src/components/nodes/VideoInputNode.tsx
@@ -20,6 +20,7 @@ const KEYFRAMES_ACTION_LABEL = "\u9996\u5c3e\u5e27\u751f\u6210\u89c6\u9891";
 const FIRST_FRAME_ACTION_LABEL = "\u9996\u5e27\u751f\u6210\u89c6\u9891";
 const FIRST_FRAME_LABEL = "\u9996\u5e27";
 const LAST_FRAME_LABEL = "\u5c3e\u5e27";
+const TARGET_VIDEO_LABEL = "\u89c6\u9891\u8282\u70b9";
 
 export function VideoInputNode({ id, data, selected }: NodeProps<VideoInputNodeType>) {
   const nodeData = data;
@@ -32,8 +33,8 @@ export function VideoInputNode({ id, data, selected }: NodeProps<VideoInputNodeT
   // Use blob URL for efficient playback of large base64 videos
   const playbackUrl = useVideoBlobUrl(nodeData.video ?? null);
 
-  // 只负责搭建“首帧/尾帧 -> 生成视频”的节点链路，视频文件由用户后续在各节点上传。
-  const createGenerateVideoChain = useCallback(
+  // 只负责搭建“首帧/尾帧 -> 视频节点”的链路，视频文件由用户后续在各节点上传。
+  const createVideoNodeChain = useCallback(
     (hasLastFrame: boolean) => {
       const currentNode = nodes.find((node) => node.id === id);
       const currentWidth =
@@ -43,7 +44,7 @@ export function VideoInputNode({ id, data, selected }: NodeProps<VideoInputNodeT
         currentNode?.measured?.height ??
         (typeof currentNode?.style?.height === "number" ? currentNode.style.height : defaultNodeDimensions.videoInput.height);
       const currentPosition = currentNode?.position ?? { x: 0, y: 0 };
-      const generateVideoHeight = defaultNodeDimensions.generateVideo.height;
+      const targetVideoHeight = defaultNodeDimensions.videoInput.height;
       const verticalGap = 52;
 
       // 复用当前空视频节点作为首帧节点，避免点击快捷入口后留下多余空节点。
@@ -61,19 +62,23 @@ export function VideoInputNode({ id, data, selected }: NodeProps<VideoInputNodeT
         : null;
 
       const targetY = hasLastFrame
-        ? currentPosition.y + currentHeight + verticalGap / 2 - generateVideoHeight / 2
+        ? currentPosition.y + currentHeight + verticalGap / 2 - targetVideoHeight / 2
         : currentPosition.y;
 
-      // 生成节点放在素材节点右侧；双帧模式下按两帧整体高度居中。
-      const generateVideoNodeId = addNode("generateVideo", {
-        x: currentPosition.x + currentWidth + 180,
-        y: targetY,
-      });
+      // 右侧目标同样创建为空视频节点，用户后续可以自行上传或继续接入下一步。
+      const targetVideoNodeId = addNode(
+        "videoInput",
+        {
+          x: currentPosition.x + currentWidth + 180,
+          y: targetY,
+        },
+        { label: TARGET_VIDEO_LABEL }
+      );
 
       onConnect({
         source: id,
         sourceHandle: "video",
-        target: generateVideoNodeId,
+        target: targetVideoNodeId,
         targetHandle: "video",
       });
 
@@ -81,7 +86,7 @@ export function VideoInputNode({ id, data, selected }: NodeProps<VideoInputNodeT
         onConnect({
           source: lastFrameNodeId,
           sourceHandle: "video",
-          target: generateVideoNodeId,
+          target: targetVideoNodeId,
           targetHandle: "video",
         });
       }
@@ -199,7 +204,7 @@ export function VideoInputNode({ id, data, selected }: NodeProps<VideoInputNodeT
                 onClick={(event) => {
                   event.preventDefault();
                   event.stopPropagation();
-                  createGenerateVideoChain(true);
+                  createVideoNodeChain(true);
                 }}
               >
                 <svg className="h-4 w-4 shrink-0" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={1.8}>
@@ -213,7 +218,7 @@ export function VideoInputNode({ id, data, selected }: NodeProps<VideoInputNodeT
                 onClick={(event) => {
                   event.preventDefault();
                   event.stopPropagation();
-                  createGenerateVideoChain(false);
+                  createVideoNodeChain(false);
                 }}
               >
                 <svg className="h-4 w-4 shrink-0" fill="currentColor" viewBox="0 0 24 24">
diff --git a/src/store/workflowStore.ts b/src/store/workflowStore.ts
index 4b326e4b..8a438eb4 100644
--- a/src/store/workflowStore.ts
+++ b/src/store/workflowStore.ts
@@ -658,7 +658,10 @@ const workflowStoreImpl: StateCreator<WorkflowStore> = (set, get) => ({
   },
 
   setShowQuickstart: (show: boolean) => {
-    set({ showQuickstart: show });
+    // 避免重复写入相同状态触发无意义渲染，降低弹窗回调形成循环更新的风险。
+    set((state) => (
+      state.showQuickstart === show ? state : { showQuickstart: show }
+    ));
   },
 
   setHoveredNodeId: (id: string | null) => {