diff --git a/unity/upms/python/Editor/CopyPuertsPythonRuntimePostBuild.cs b/unity/upms/python/Editor/CopyPuertsPythonRuntimePostBuild.cs
new file mode 100644
index 0000000000..858b776172
--- /dev/null
+++ b/unity/upms/python/Editor/CopyPuertsPythonRuntimePostBuild.cs
@@ -0,0 +1,92 @@
+#if UNITY_EDITOR
+using System;
+using System.IO;
+using UnityEditor;
+using UnityEditor.Callbacks;
+using UnityEngine;
+
+public static class CopyPuertsPythonRuntimePostBuild
+{
+    [PostProcessBuild(999)]
+    public static void OnPostprocessBuild(BuildTarget target, string buildPath)
+    {
+        string sourceRelativePath = null;
+        string destinationRelativePath = null;
+
+
+        switch (target)
+        {
+            case BuildTarget.StandaloneOSX:
+                // TODO
+                break;
+            case BuildTarget.StandaloneWindows64:
+                sourceRelativePath = "Plugins/x86_64";
+                destinationRelativePath = "Plugins/x86_64";
+                break;
+            default:
+                break;
+        }
+
+        if (sourceRelativePath == null || destinationRelativePath == null)
+        {
+            Debug.Log($"[PuertsPythonCopy] Skip target={target}, no configuration for this platform.");
+            return;
+        }
+
+        var productName = Path.GetFileNameWithoutExtension(buildPath);
+
+        const string packageName = "com.tencent.puerts.python";
+        var pi = UnityEditor.PackageManager.PackageInfo.FindForPackageName(packageName);
+        string packagePath = null;
+        if (pi != null && !string.IsNullOrEmpty(pi.resolvedPath))
+        {
+            packagePath = pi.resolvedPath;
+        }
+
+        try
+        {
+            if (string.IsNullOrEmpty(packagePath))
+            {
+                Debug.LogWarning($"[PuertsPythonCopy] Package not found: {packagePath}");
+                return;
+            }
+
+            var sourceDir = Path.GetFullPath(Path.Combine(packagePath, sourceRelativePath));
+            if (!Directory.Exists(sourceDir))
+            {
+                Debug.LogWarning($"[PuertsPythonCopy] Source directory not found: {sourceDir}");
+                return;
+            }
+
+            var targetDir = Path.Combine(Path.GetDirectoryName(buildPath), $"{productName}_Data", destinationRelativePath);
+
+
+            switch (target)
+            {
+                case BuildTarget.StandaloneOSX:
+                    // TODO
+                    break;
+                case BuildTarget.StandaloneWindows64:
+                    string[] patterns = new[] { "LICENSE.txt", "*.pyd", "python.cat", "python.exe", "pythonw.exe", "python3*._pth", "python3*.zip" };
+                    foreach (string pattern in patterns)
+                    {
+                        foreach (var file in Directory.GetFiles(sourceDir, pattern))
+                        {
+                            var destFile = Path.Combine(targetDir, Path.GetFileName(file));
+                            File.Copy(file, destFile, true);
+                        }
+                    }
+                    break;
+                default:
+                    break;
+            }
+
+
+        }
+        catch (Exception ex)
+        {
+            Debug.LogError("[PuertsPythonCopy] Failed: " + ex);
+        }
+    }
+}
+#endif
\ No newline at end of file
diff --git a/unity/upms/python/Runtime/Src/Backends/BackendPython.cs b/unity/upms/python/Runtime/Src/Backends/BackendPython.cs
index 5724ee8046..df69ef746a 100644
--- a/unity/upms/python/Runtime/Src/Backends/BackendPython.cs
+++ b/unity/upms/python/Runtime/Src/Backends/BackendPython.cs
@@ -38,7 +38,35 @@ public override IntPtr CreateEnvRef()
             var pythonPrefix = System.IO.Path.Combine(AppContext.BaseDirectory, "runtimes", GetRuntimeIdentifier(), "native");
             PapiPythonNative.InitPythonByHome(pythonPrefix);
 #endif
-            envRef = PapiPythonNative.CreatePythonPapiEnvRef();  
+
+#if UNITY_STANDALONE_WIN && !UNITY_EDITOR
+            var pythonPrefix = System.IO.Path.Combine(UnityEngine.Application.dataPath, "Plugins\\x86_64");
+            PapiPythonNative.InitPythonByHome(pythonPrefix);
+#endif
+#if UNITY_EDITOR
+            const string packageName = "com.tencent.puerts.python";
+            var pi = UnityEditor.PackageManager.PackageInfo.FindForPackageName(packageName);
+            string packagePath = null;
+            if (pi != null && !string.IsNullOrEmpty(pi.resolvedPath))
+            {
+                packagePath = pi.resolvedPath;
+            }
+
+            string pythonHomeRelativePath = null;
+            if (packagePath != null)
+            {
+#if UNITY_EDITOR_WIN
+                pythonHomeRelativePath = "Plugins/x86_64";
+                var home = System.IO.Path.GetFullPath(System.IO.Path.Combine(packagePath, pythonHomeRelativePath));
+                PapiPythonNative.InitPythonByHome(home);
+#endif
+            }
+            else
+            {
+                UnityEngine.Debug.LogWarning($"Package {packageName} not found. Python initialization may fail if the Python runtime is not in the system PATH.");
+            }
+#endif
+            envRef = PapiPythonNative.CreatePythonPapiEnvRef();
             return envRef;
         }