diff --git a/cwd-api/src/api/public/getPagePv.ts b/cwd-api/src/api/public/getPagePv.ts
index 78351ac..cbf99e2 100644
--- a/cwd-api/src/api/public/getPagePv.ts
+++ b/cwd-api/src/api/public/getPagePv.ts
@@ -12,11 +12,23 @@ export const getPagePv = async (c: Context<{ Bindings: Bindings }>) => {
 			return c.json({ message: 'post_slug is required' }, 400);
 		}
 
-		const row = await c.env.CWD_DB.prepare(
-			'SELECT pv FROM page_stats WHERE post_slug = ? AND site_id = ?'
-		)
-			.bind(postSlug, siteId)
-			.first<{ pv: number }>();
+		let row: { pv: number } | null = null;
+
+		if (siteId) {
+			// 有 siteId 时精确匹配
+			row = await c.env.CWD_DB.prepare(
+				'SELECT pv FROM page_stats WHERE post_slug = ? AND site_id = ?'
+			)
+				.bind(postSlug, siteId)
+				.first<{ pv: number }>();
+		} else {
+			// 无 siteId 时，匹配空字符串或 NULL
+			row = await c.env.CWD_DB.prepare(
+				'SELECT pv FROM page_stats WHERE post_slug = ? AND (site_id = ? OR site_id IS NULL)'
+			)
+				.bind(postSlug, '')
+				.first<{ pv: number }>();
+		}
 
 		const pv = row?.pv || 0;
 
diff --git a/docs/widget/src/core/api.js b/docs/widget/src/core/api.js
index 14539ce..f3d0eba 100644
--- a/docs/widget/src/core/api.js
+++ b/docs/widget/src/core/api.js
@@ -122,16 +122,20 @@ export function createApiClient(config) {
 
     async function trackVisit() {
         try {
+            const body = {
+                postSlug: config.postUrl || config.postSlug,
+                postTitle: config.postTitle,
+                postUrl: config.postUrl
+            };
+            if (config.siteId) {
+                body.siteId = config.siteId;
+            }
             await fetch(`${baseUrl}/api/analytics/visit`, {
                 method: 'POST',
                 headers: {
                     'Content-Type': 'application/json'
                 },
-                body: JSON.stringify({
-                    postSlug: config.postUrl || config.postSlug,
-                    postTitle: config.postTitle,
-                    postUrl: config.postUrl
-                })
+                body: JSON.stringify(body)
             });
         } catch (e) {
         }