diff --git a/apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetTransferModel.ts b/apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetTransferModel.ts
index 96e1e6216..d25bd9946 100644
--- a/apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetTransferModel.ts
+++ b/apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetTransferModel.ts
@@ -28,6 +28,19 @@ export type ResourceCanvasPanelEntryInput = {
   previewError: string | null;
 };
 
+/**
+ * 资源能否落盘到用户本地。
+ *
+ * 保存走的是本地文件复制（原生保存对话框 + Rust 分块拷贝），因此只要求有可读路径；
+ * 虚拟版本条目没有对应文件，拿不到路径就不放行。资源面板的「下载」与画布工具条的
+ * 「下载按钮」共用这一条判据，不要在别处再写第二份。
+ */
+export function isResourceCanvasExportable(
+  resource: Pick<ProjectResource, 'version' | 'path'>,
+) {
+  return resource.version === undefined && resource.path !== '';
+}
+
 export function resolveResourceCanvasPanelEntries(
   inputs: readonly ResourceCanvasPanelEntryInput[],
 ): ResourceCanvasPanelEntry[] {
@@ -39,9 +52,7 @@ export function resolveResourceCanvasPanelEntries(
     path: input.resource.path,
     mediaType: input.resource.mediaType,
     selectable: true,
-    // 保存走本地文件复制，因此只要求有可读路径；虚拟版本条目没有文件，不能保存。
-    downloadable:
-      input.resource.version === undefined && input.resource.path !== '',
+    downloadable: isResourceCanvasExportable(input.resource),
     previewIdentity: input.previewIdentity,
     previewSourceUrl: input.previewSourceUrl,
     previewStatus: input.previewStatus,