diff --git a/com.unity.uiwidgets/Runtime/engine2/UIWidgetsPanel.cs b/com.unity.uiwidgets/Runtime/engine2/UIWidgetsPanel.cs
index 26897c80..a2371f6e 100644
--- a/com.unity.uiwidgets/Runtime/engine2/UIWidgetsPanel.cs
+++ b/com.unity.uiwidgets/Runtime/engine2/UIWidgetsPanel.cs
@@ -79,7 +79,7 @@ namespace Unity.UIWidgets.engine2 {
                 _width, _height, _devicePixelRatio, Application.streamingAssetsPath);
 
             Input_OnEnable();
-            NativeConsole.InitNativeConsoleDelegate(NativeConsole.LogMessageFromCpp);
+            NativeConsole.OnEnable();
         }
 
         protected virtual void main() {
diff --git a/com.unity.uiwidgets/Runtime/engine2/native_console.cs b/com.unity.uiwidgets/Runtime/engine2/native_console.cs
index 750cdf49..480727e2 100644
--- a/com.unity.uiwidgets/Runtime/engine2/native_console.cs
+++ b/com.unity.uiwidgets/Runtime/engine2/native_console.cs
@@ -5,14 +5,18 @@ using System.Runtime.InteropServices;
 using NativeBindings = Unity.UIWidgets.ui.NativeBindings;
 
 public static class NativeConsole {
-    public delegate void LogDelegate(IntPtr message, int iSize);
+    internal delegate void LogDelegate(IntPtr message, int iSize);
 
     [DllImport(NativeBindings.dllName)]
-    public static extern void InitNativeConsoleDelegate(LogDelegate log);
+    internal static extern void InitNativeConsoleDelegate(LogDelegate log);
 
     [MonoPInvokeCallback(typeof(LogDelegate))]
-    public static void LogMessageFromCpp(IntPtr message, int iSize) {
+    internal static void LogMessageFromCpp(IntPtr message, int iSize) {
         Debug.Log(Marshal.PtrToStringAnsi(message, iSize));
     }
 
+    public static void OnEnable()
+    {
+        InitNativeConsoleDelegate(LogMessageFromCpp);
+    }
 }
diff --git a/engine/Build.bee.cs b/engine/Build.bee.cs
index a8cc1ee3..635e251d 100644
--- a/engine/Build.bee.cs
+++ b/engine/Build.bee.cs
@@ -308,6 +308,8 @@ class Build
                 "src/shell/platform/unity/unity_surface_manager.h",
                 "src/shell/platform/unity/win32_task_runner.cc",
                 "src/shell/platform/unity/win32_task_runner.h",
+                "src/shell/platform/unity/unity_console.cc",
+                "src/shell/platform/unity/unity_console.h",
 
                 "src/shell/version/version.cc",
                 "src/shell/version/version.h",
diff --git a/engine/src/shell/platform/unity/uiwidgets_panel.cc b/engine/src/shell/platform/unity/uiwidgets_panel.cc
index 21b9e717..a8fd7b79 100644
--- a/engine/src/shell/platform/unity/uiwidgets_panel.cc
+++ b/engine/src/shell/platform/unity/uiwidgets_panel.cc
@@ -11,7 +11,6 @@
 #include "shell/common/switches.h"
 #include "uiwidgets_system.h"
 #include "unity_external_texture_gl.h"
-#include "unity_console.h"
 
 namespace uiwidgets {
 
@@ -459,13 +458,11 @@ UIWIDGETS_API(void)
 UIWidgetsPanel_onMouseDown(UIWidgetsPanel* panel, float x, float y,
                            int button) {
   panel->OnMouseDown(x, y, button);
-  UnityConsole::WriteLine("OnMouseDown");
 }
 
 UIWIDGETS_API(void)
 UIWidgetsPanel_onMouseUp(UIWidgetsPanel* panel, float x, float y, int button) {
   panel->OnMouseUp(x, y, button);
-  UnityConsole::WriteLine("OnMouseUp");
 }
 
 UIWIDGETS_API(void)
diff --git a/engine/src/shell/platform/unity/unity_console.cc b/engine/src/shell/platform/unity/unity_console.cc
new file mode 100644
index 00000000..7a6ce8ac
--- /dev/null
+++ b/engine/src/shell/platform/unity/unity_console.cc
@@ -0,0 +1,22 @@
+#include "unity_console.h"
+#include <stdarg.h>
+
+namespace uiwidgets {
+
+ void UnityConsole::WriteLine(const char* fmt, ...) {
+  char log_str[512] = { 0 };
+  va_list ap;
+  va_start(ap, fmt);
+  vsprintf(log_str, fmt, ap);
+  _log(log_str, strlen(log_str));
+  va_end(ap);
+}
+
+LogDelegate UnityConsole::_log;
+
+UIWIDGETS_API(void) 
+InitNativeConsoleDelegate(LogDelegate Log) { 
+  UnityConsole::_log = Log; 
+}
+
+}
diff --git a/engine/src/shell/platform/unity/unity_console.h b/engine/src/shell/platform/unity/unity_console.h
index e2ad19cd..ebc95bf2 100644
--- a/engine/src/shell/platform/unity/unity_console.h
+++ b/engine/src/shell/platform/unity/unity_console.h
@@ -1,27 +1,26 @@
+#pragma once
 #include "runtime/mono_api.h"
 
 namespace uiwidgets {
 
 typedef void (*LogDelegate)(char* message, int iSize);
 
-extern "C"{
+
 class UnityConsole{
  public:
-   static void (*Log)(char* message,int iSize);
-   /*
+  static LogDelegate _log;
+
+   /**
    output the log to unity editor console window
+    @param fmt   log format
+    @param ...   log args
+    @return      null
+
+    example: 
+      UnityConsole::WriteLine("output log without fmt param");
+      UnityConsole::WriteLine("%s: %d + %d = %d","output log with param", 1, 2, 3);
    */
-   static void WriteLine(const char* fmt, ...){ 
-   char log_str[512] = { 0 };
-   va_list ap;
-   va_start(ap, fmt);
-   sprintf_s(log_str, fmt, ap);
-   Log(log_str, strlen(log_str));
-   va_end(ap);
-  }
+  static void WriteLine(const char* fmt, ...);
 };
-  void (*UnityConsole::Log)(char* message, int iSize);
-  UIWIDGETS_API(void) 
-  InitNativeConsoleDelegate(LogDelegate Log){ UnityConsole::Log = Log; }
-}
+
 } // namespace uiwidgets