diff --git a/src/SkyApm.Utilities.Configuration/ConfigurationBuilderExtensions.cs b/src/SkyApm.Utilities.Configuration/ConfigurationBuilderExtensions.cs
index b18fce66..2fd3e7b6 100644
--- a/src/SkyApm.Utilities.Configuration/ConfigurationBuilderExtensions.cs
+++ b/src/SkyApm.Utilities.Configuration/ConfigurationBuilderExtensions.cs
@@ -68,7 +68,7 @@ private static string BuildDefaultServiceInstanceName()
                     .GetHostAddresses(hostName)
                     .First(x => x.AddressFamily == AddressFamily.InterNetwork).ToString();
 
-                return $"{ipAddress}@{guid}";
+                return $"{guid}@{ipAddress}";
             }
             catch (Exception)
             {