diff --git a/core/Transition/TransitionFade.cpp b/core/Transition/TransitionFade.cpp
index dea004dd..f77437f4 100644
--- a/core/Transition/TransitionFade.cpp
+++ b/core/Transition/TransitionFade.cpp
@@ -2,53 +2,28 @@
 #include "..\e2dnode.h"
 
 e2d::TransitionFade::TransitionFade(double duration)
-	: Transition(0)
-	, _fadeOutDuration(max(duration / 2, 0))
-	, _fadeInDuration(max(duration / 2, 0))
-	, _fadeOutTransioning(true)
-{
-}
-
-e2d::TransitionFade::TransitionFade(double fadeOutDuration, double fadeInDuration)
-	: Transition(0)
-	, _fadeOutDuration(max(fadeOutDuration, 0))
-	, _fadeInDuration(max(fadeInDuration, 0))
-	, _fadeOutTransioning(true)
+	: Transition(duration)
 {
 }
 
 void e2d::TransitionFade::_init(Scene * prev, Scene * next)
 {
 	Transition::_init(prev, next);
-	if (_outScene)
-	{
-		_fadeOutTransioning = true;
-		_duration = _fadeOutDuration;
-	}
-	else
-	{
-		_fadeOutTransioning = false;
-		_duration = _fadeInDuration;
-	}
 	_outLayerParam.opacity = 1;
 	_inLayerParam.opacity = 0;
 }
 
 void e2d::TransitionFade::_updateCustom()
 {
-	if (_fadeOutTransioning)
+	if (_delta < 0.5)
 	{
-		_outLayerParam.opacity = float(1 - _delta);
-		if (_delta >= 1)
-		{
-			_fadeOutTransioning = false;
-			_duration = _fadeInDuration;
-			_last = Time::getTotalTime();
-		}
+		_outLayerParam.opacity = 1 - float(_delta) * 2;
+		_inLayerParam.opacity = 0;
 	}
 	else
 	{
-		_inLayerParam.opacity = float(_delta);
+		_outLayerParam.opacity = 0;
+		_inLayerParam.opacity = float(_delta - 0.5) * 2;
 		if (_delta >= 1)
 		{
 			this->_stop();
diff --git a/core/e2dtransition.h b/core/e2dtransition.h
index 73eb4209..5cdc70c5 100644
--- a/core/e2dtransition.h
+++ b/core/e2dtransition.h
@@ -8,7 +8,7 @@ namespace e2d
 class SceneManager;
 
 
-// 基础过渡动作
+// 场景过渡
 class Transition :
 	public Object
 {
@@ -19,32 +19,32 @@ public:
 
 	virtual ~Transition();
 
-	// 场景切换动作是否结束
+	// 场景过渡动画是否结束
 	bool isDone();
 
 	// 销毁对象
 	virtual void onDestroy() override;
 
 protected:
-	// 初始化场景动作
+	// 初始化场景过渡动画
 	virtual void _init(
 		Scene * prev,
 		Scene * next
 	);
 
-	// 更新场景动作
+	// 更新场景过渡动画
 	virtual void _update();
 
-	// 更新场景动作
+	// 更新场景过渡动画
 	virtual void _updateCustom() = 0;
 
-	// 渲染场景动作
+	// 渲染场景过渡动画
 	virtual void _render();
 
-	// 重置场景动作
+	// 重置场景过渡动画
 	virtual void _reset() = 0;
 
-	// 停止场景动作
+	// 停止场景过渡动画
 	virtual void _stop();
 
 protected:
@@ -62,21 +62,17 @@ protected:
 };
 
 
+// 渐变过渡
 class TransitionFade :
 	public Transition
 {
 public:
 	TransitionFade(
-		double duration	/* 动作持续时长 */
-	);
-
-	TransitionFade(
-		double fadeOutDuration,	/* 前一场景淡出动作持续时长 */
-		double fadeInDuration	/* 后一场景淡入动作持续时长 */
+		double duration	/* 动画持续时长 */
 	);
 
 protected:
-	// 更新动作
+	// 更新动画
 	virtual void _updateCustom() override;
 
 	virtual void _init(
@@ -85,11 +81,6 @@ protected:
 	) override;
 
 	virtual void _reset() override;
-
-protected:
-	double _fadeOutDuration;
-	double _fadeInDuration;
-	bool _fadeOutTransioning;
 };
 
 
@@ -98,11 +89,11 @@ class TransitionEmerge :
 {
 public:
 	TransitionEmerge(
-		double duration	/* 浮现动作持续时长 */
+		double duration	/* 浮现动画持续时长 */
 	);
 
 protected:
-	// 更新动作
+	// 更新动画
 	virtual void _updateCustom() override;
 
 	virtual void _init(
@@ -119,12 +110,12 @@ class TransitionMove :
 {
 public:
 	TransitionMove(
-		double moveDuration,					/* 场景移动动作持续时长 */
+		double moveDuration,					/* 场景移动动画持续时长 */
 		Direction direction = Direction::LEFT	/* 场景移动方向 */
 	);
 
 protected:
-	// 更新动作
+	// 更新动画
 	virtual void _updateCustom() override;
 
 	virtual void _init(