diff --git a/src/Contracts/Masa.Scheduler.Contracts.Server/Infrastructure/Utils/HttpUtils.cs b/src/Contracts/Masa.Scheduler.Contracts.Server/Infrastructure/Utils/HttpUtils.cs
index 07bcea9..6f37b5d 100644
--- a/src/Contracts/Masa.Scheduler.Contracts.Server/Infrastructure/Utils/HttpUtils.cs
+++ b/src/Contracts/Masa.Scheduler.Contracts.Server/Infrastructure/Utils/HttpUtils.cs
@@ -5,7 +5,7 @@ namespace Masa.Scheduler.Contracts.Server.Infrastructure.Utils;
 
 public static class HttpUtils
 {
-    private static ActivitySource _source = new ActivitySource("Masa.Scheduler.Background");
+    public static ActivitySource ActivitySource { get; private set; } = new ActivitySource("Masa.Scheduler.Background");
 
     public static HttpMethod ConvertHttpMethod(HttpMethods methods)
     {
@@ -36,7 +36,7 @@ public static void AddHttpHeader(HttpClient client, List<KeyValuePair<string, st
 
     public static Activity? SetTraceParent(string? traceId, string? spanId)
     {
-        return _source.StartActivity("Background Task", ActivityKind.Consumer, $"00-{traceId}-{spanId}-01");
+        return ActivitySource.StartActivity("Background Task", ActivityKind.Consumer, $"00-{traceId}-{spanId}-01");
     }
 
     public static Uri GetRequestUrl(string requestUrl, List<KeyValuePair<string, string>> httpParameters)
diff --git a/src/Services/Masa.Scheduler.Services.Worker/Extensions/OpenTelemetrySchedulerExtensions.cs b/src/Services/Masa.Scheduler.Services.Worker/Extensions/OpenTelemetrySchedulerExtensions.cs
index 71f0e7b..023fa09 100644
--- a/src/Services/Masa.Scheduler.Services.Worker/Extensions/OpenTelemetrySchedulerExtensions.cs
+++ b/src/Services/Masa.Scheduler.Services.Worker/Extensions/OpenTelemetrySchedulerExtensions.cs
@@ -46,7 +46,7 @@ public static IServiceCollection AddSchedulerObservable(this IServiceCollection
             {
                 builder.SetResourceBuilder(resources);
                 builder.AddOtlpExporter(options => options.Endpoint = uri);
-                builder.AddSource("Masa.Scheduler.Background");
+                builder.AddSource(HttpUtils.ActivitySource.Name);
             },
             builder =>
             {