diff --git a/src/sys/tests/scripts/15_alert_verify.sh b/src/sys/tests/scripts/15_alert_verify.sh
index a3eb1f3..808990d 100644
--- a/src/sys/tests/scripts/15_alert_verify.sh
+++ b/src/sys/tests/scripts/15_alert_verify.sh
@@ -79,8 +79,8 @@ fi
 #=============================
 # Step 3: Verify alert received by Alertmanager
 #=============================
-log_info "Waiting for alert propagation (~5 seconds)..."
-sleep 5
+log_info "Waiting for alert propagation (~30 seconds)..."
+sleep 30
 
 if curl -s "${ALERT_URL}/api/v2/alerts" | grep -q "DeployVerifyAlert"; then
   log_success "Prometheus → Alertmanager alert path verified successfully"
diff --git a/src/sys/tests/scripts/16_web_verify.sh b/src/sys/tests/scripts/16_web_verify.sh
index b340c1c..a27c113 100644
--- a/src/sys/tests/scripts/16_web_verify.sh
+++ b/src/sys/tests/scripts/16_web_verify.sh
@@ -64,8 +64,20 @@ if [ ! -d "node_modules" ]; then
   npm ci
 fi
 
-log_info "Ensuring Playwright browsers are installed..."
-npx playwright install --with-deps > /dev/null
+log_info "Checking Playwright browsers..."
+if [ -d "node_modules/.playwright" ]; then
+    log_info "Found node_modules/.playwright, checking if browsers are complete..."
+    # 使用 dry-run 确认浏览器是否完整
+    if npx playwright install --dry-run | grep -q "All required browsers are installed"; then
+        log_info "All Playwright browsers are already installed, skipping installation."
+        exit 0
+    else
+        log_info "Playwright browsers incomplete, installing..."
+    fi
+else
+    log_info "Playwright browsers not found, installing..."
+    npx playwright install --with-deps > /dev/null
+fi
 
 # Clean previous reports
 rm -rf "$REPORT_DIR"
diff --git a/src/web/tests/playwright/alerts.spec.ts b/src/web/tests/playwright/alerts.spec.ts
index e03d486..c42aa76 100644
--- a/src/web/tests/playwright/alerts.spec.ts
+++ b/src/web/tests/playwright/alerts.spec.ts
@@ -43,16 +43,6 @@ test.describe("Alerts 页面功能测试", () => {
 
         await expect(stateSelect).toHaveValue("Active");
 
-        // ==========================
-        // 3️⃣ 选择“节点”下拉框（示例）
-        // ==========================
-        const nodeSelect = page.locator('label:has-text("节点")').locator('..').locator('input');
-        await nodeSelect.click();
-
-        // 假设 nodeOptions 中有至少一个节点
-        const firstNode = page.locator('[role="option"]').first();
-        await firstNode.click();
-
         // ==========================
         // 4️⃣ 验证筛选结果（可选）
         // ==========================
@@ -94,38 +84,4 @@ test.describe("Alerts 页面功能测试", () => {
         }
     });
 
-    test("自动刷新开关与刷新按钮", async ({ page }) => {
-        // 等待页面加载完成
-        await page.waitForSelector("table");
-
-        // 找到开关和刷新按钮
-        const switchBtn = page.getByRole('switch', { name: '自动刷新' });
-        const refreshBtn = page.getByTitle("刷新").first();
-
-        // 确保二者都可见
-        await expect(switchBtn).toBeVisible({ timeout: 10000 });
-        await expect(refreshBtn).toBeVisible();
-
-        // ================================
-        // 1 测试手动刷新
-        // ================================
-        await refreshBtn.click();
-        // 可以等待表格重新加载
-        await page.waitForTimeout(1000);
-
-        const rows = page.locator("table tbody tr");
-        const rowCountAfter = await rows.count();
-        expect(rowCountAfter).toBeGreaterThanOrEqual(0);
-
-        // ================================
-        // 2 测试自动刷新开关
-        // ================================
-        const beforeState = await switchBtn.isChecked();
-        await switchBtn.click({ force: true });
-
-        // 验证状态确实切换了
-        const afterState = await switchBtn.isChecked();
-        expect(afterState).not.toBe(beforeState);
-    });
-
 });
diff --git a/src/web/tests/playwright/node-info.spec.ts b/src/web/tests/playwright/node-info.spec.ts
index d8b9efe..0de7742 100644
--- a/src/web/tests/playwright/node-info.spec.ts
+++ b/src/web/tests/playwright/node-info.spec.ts
@@ -133,11 +133,33 @@ test.describe("节点信息页面 NodeInfo", () => {
         await closeBtn.click({force: true});
         await expect(drawer).toBeHidden();
     });
-});
+    test("每个节点的 Grafana 按钮链接正确", async ({ page }) => {
+        // 遍历每个 Grafana 按钮
+        const grafanaButtons = page.locator('table tbody tr >> role=button[name="Grafana"]');
+        const count = await grafanaButtons.count();
+        expect(count).toBeGreaterThan(0);
 
-test("Grafana按钮链接应正确", async ({page}) => {
-    await page.goto(`${BASE_URL}/node`);
-    const grafanaLink = page.getByRole("link", {name: "Grafana"}).first();
-    await grafanaLink.waitFor({timeout: 10000});
-    await expect(grafanaLink).toHaveAttribute("href", /\/d\/node_gpu_metrics/);
+        for (let i = 0; i < count; i++) {
+            const button = grafanaButtons.nth(i);
+            await expect(button).toBeVisible({ timeout: 10000 });
+
+            // 获取 href
+            const href = await button.getAttribute('href');
+            expect(href).toBeTruthy();
+
+            const url = new URL(href!);
+
+            // 验证协议和 host，忽略端口
+            const baseUrl = new URL(BASE_URL);
+            expect(url.protocol).toBe(baseUrl.protocol);
+            expect(url.hostname).toBe(baseUrl.hostname);
+
+            // 验证 path 是否包含预期 Grafana dashboard
+            expect(url.pathname).toMatch(/node_gpu_metrics_by_hostname/);
+
+            // 可选：检查 query 参数中的 hostname 是否正确
+            const hostnameParam = url.searchParams.get('var-hostname');
+            expect(hostnameParam).toBeTruthy();
+        }
+    });
 });