diff --git a/Runtime/GuruCore/Runtime/Adjust/AdjustService.cs b/Runtime/GuruCore/Runtime/Adjust/AdjustService.cs
index fac0fe2..8a25782 100644
--- a/Runtime/GuruCore/Runtime/Adjust/AdjustService.cs
+++ b/Runtime/GuruCore/Runtime/Adjust/AdjustService.cs
@@ -59,6 +59,8 @@ namespace Guru
 			AdjustConfig config = new AdjustConfig(appToken, environment);
 			config.setLogLevel(GetAdjustLogLevel());
 			config.setDelayStart(DelayTime);
+            
+			config.setPreinstallTrackingEnabled(true); // Adjust Preinstall
 
 #if UNITY_ANDROID
 			if (!string.IsNullOrEmpty(fbAppId)) config.setFbAppId(fbAppId); // 注入 MIR ID