diff --git a/libcef/browser/page_load_metrics/oh_page_load_metrics_observer.cc b/libcef/browser/page_load_metrics/oh_page_load_metrics_observer.cc
index 2801344b410282dfcd04776b7c8dd4dbd70f0c22..0142edb5176d0d09b4a552ffd080f97b08bcf232 100644
--- a/libcef/browser/page_load_metrics/oh_page_load_metrics_observer.cc
+++ b/libcef/browser/page_load_metrics/oh_page_load_metrics_observer.cc
@@ -25,6 +25,8 @@
 #include "url/gurl.h"
 #include "ohos_nweb/src/sysevent/event_reporter.h"
 
+int64_t OhPageLoadMetricsObserver::navigation_start_timestamp_ = -1;
+
 OhPageLoadMetricsObserver::OhPageLoadMetricsObserver() {
   network_quality_tracker_ = g_browser_process->network_quality_tracker();
   DCHECK(network_quality_tracker_);
@@ -275,8 +277,6 @@ void OhPageLoadMetricsObserver::OnLoadedResource(
     did_dispatch_on_main_resourse_ = true;
 
     base::TimeTicks navigation_start = GetDelegate().GetNavigationStart();
-    web_performance_timing_.navigation_start =
-      navigation_start.is_null() ? -1 : navigation_start.since_origin().InMilliseconds();
 
     const net::LoadTimingInfo& timing =
       *extra_request_complelte_info.load_timing_info;
@@ -326,6 +326,7 @@ void OhPageLoadMetricsObserver::ReportBufferedMetrics(
 
   reported_buffered_metrics_ = true;
 
+  web_performance_timing_.navigation_start = navigation_start_timestamp_;
   web_performance_timing_.redirect_count = main_frame_request_redirect_count_;
   const page_load_metrics::ContentfulPaintTimingInfo& largest_contentful_paint =
     GetDelegate().GetLargestContentfulPaintHandler()
@@ -338,3 +339,13 @@ void OhPageLoadMetricsObserver::ReportBufferedMetrics(
     return;
   }
 }
+
+int64_t OhPageLoadMetricsObserver::GetCurrentTimestampMS() {
+  auto currentTime = std::chrono::system_clock::now().time_since_epoch();
+  return std::chrono::duration_cast<std::chrono::milliseconds>(currentTime)
+      .count();
+}
+
+void OhPageLoadMetricsObserver::OnNavigationStart() {
+  navigation_start_timestamp_ = GetCurrentTimestampMS();
+}
diff --git a/libcef/browser/page_load_metrics/oh_page_load_metrics_observer.h b/libcef/browser/page_load_metrics/oh_page_load_metrics_observer.h
index 3b2efedfdd77cefae1c65412306772f00f3e97d9..8180581a5c844f6ea6e7ff712d2c1f70b72348ef 100644
--- a/libcef/browser/page_load_metrics/oh_page_load_metrics_observer.h
+++ b/libcef/browser/page_load_metrics/oh_page_load_metrics_observer.h
@@ -62,6 +62,7 @@ class OhPageLoadMetricsObserver
   void OnFirstPaintInPage(
       const page_load_metrics::mojom::PageLoadTiming& timing) override;
 
+  static void OnNavigationStart();
  protected:
   OhPageLoadMetricsObserver(
       network::NetworkQualityTracker* network_quality_tracker)
@@ -77,6 +78,7 @@ class OhPageLoadMetricsObserver
   void ReportBufferedMetrics(
       const page_load_metrics::mojom::PageLoadTiming& timing);
   void ReportPerformanceTiming();
+  int64_t GetCurrentTimestampMS();
 
  private:
   int64_t navigation_id_ = -1;
@@ -87,6 +89,7 @@ class OhPageLoadMetricsObserver
   bool reported_buffered_metrics_ = false;
   uint32_t main_frame_request_redirect_count_ = 0;
   OhWebPerformanceTiming web_performance_timing_;
+  static int64_t navigation_start_timestamp_;
 };
 
 #endif  // CEF_LIBCEF_BROWSER_PAGE_LOAD_METRICS_OH_PAGE_LOAD_METRICS_OBSERVER_H_