diff --git a/Editor/Il2CppDef/Il2CppDefGenerator.cs b/Editor/Il2CppDef/Il2CppDefGenerator.cs
index 8728c65..a9741cb 100644
--- a/Editor/Il2CppDef/Il2CppDefGenerator.cs
+++ b/Editor/Il2CppDef/Il2CppDefGenerator.cs
@@ -39,6 +39,12 @@ namespace HybridCLR.Editor.Il2CppDef
             GeneratePlaceHolderAssemblies();
         }
 
+
+        private static bool IsTuanJie()
+        {
+            return Regex.IsMatch(Application.unityVersion, @".*t\d+$");
+        }
+
         private void GenerateIl2CppConfig()
         {
             var frr = new FileRegionReplace(File.ReadAllText(_options.OutputFile));
@@ -60,6 +66,11 @@ namespace HybridCLR.Editor.Il2CppDef
                 }
             }
 
+            if (IsTuanJie())
+            {
+                lines.Add($"#define UNITY_ENGINE_TUANJIE 1");
+            }
+
             frr.Replace("UNITY_VERSION", string.Join("\n", lines));
 
             frr.Commit(_options.OutputFile);