diff --git a/apps/web/e2e/core-generation.spec.ts b/apps/web/e2e/core-generation.spec.ts
index e33339e5..c844c8f9 100755
--- a/apps/web/e2e/core-generation.spec.ts
+++ b/apps/web/e2e/core-generation.spec.ts
@@ -196,8 +196,12 @@ test.describe("Core generation flow", () => {
     await materialLabel.locator("input[type='checkbox']").check()
     await page.getByRole("button", { name: "下一步" }).click()
 
-    // Step 3: preview (纯展示页，AI 智能匹配预览)
+    // Step 3: preview — 需要先生成预览视频，才能进入下一步
     await expect(page.getByRole("heading", { name: /生成预览/ })).toBeVisible()
+    // 点击"生成预览"按钮触发预览生成
+    await page.getByRole("button", { name: "生成预览" }).click()
+    // 等待预览生成完成（后端渲染，可能需要较长时间）
+    await expect(page.getByText("预览生成成功")).toBeVisible({ timeout: 120_000 })
     await page.getByRole("button", { name: "下一步" }).click()
 
     // Step 4: title