diff --git a/cocos/3d/CCAnimate3D.cpp b/cocos/3d/CCAnimate3D.cpp
index 5f13d70cc7..da1e2c6a80 100644
--- a/cocos/3d/CCAnimate3D.cpp
+++ b/cocos/3d/CCAnimate3D.cpp
@@ -66,12 +66,12 @@ Animate3D* Animate3D::clone() const
     auto animate = const_cast<Animate3D*>(this);
     auto copy = Animate3D::create(animate->_animation);
     
-    copy->_speed = _speed;
+    copy->_absSpeed = _absSpeed;
     copy->_weight = _weight;
     copy->_elapsed = _elapsed;
     copy->_start = _start;
     copy->_last = _last;
-    copy->_playBack = _playBack;
+    copy->_playReverse = _playReverse;
     copy->setDuration(animate->getDuration());
 
     return copy;
@@ -81,7 +81,7 @@ Animate3D* Animate3D::clone() const
 Animate3D* Animate3D::reverse() const
 {
     auto animate = clone();
-    animate->_playBack = !animate->_playBack;
+    animate->_playReverse = !animate->_playReverse;
     return animate;
 }
 
@@ -112,16 +112,16 @@ void Animate3D::startWithTarget(Node *target)
 //! called every frame with it's delta time. DON'T override unless you know what you are doing.
 void Animate3D::step(float dt)
 {
-    ActionInterval::step(dt * _speed);
+    ActionInterval::step(dt * _absSpeed);
 }
 
 void Animate3D::update(float t)
 {
-    if (_target)
+    if (_target && _weight > 0.f)
     {
         float transDst[3], rotDst[4], scaleDst[3];
         float* trans = nullptr, *rot = nullptr, *scale = nullptr;
-        if (_playBack)
+        if (_playReverse)
             t = 1 - t;
         
         t = _start + t * _last;
@@ -149,13 +149,29 @@ void Animate3D::update(float t)
     
 }
 
+float Animate3D::getSpeed() const
+{
+    return _playReverse ? -_absSpeed : _absSpeed;
+}
+void Animate3D::setSpeed(float speed)
+{
+    _absSpeed = fabsf(speed);
+    _playReverse = speed < 0;
+}
+
+void Animate3D::setWeight(float weight)
+{
+    CCASSERT(weight >= 0.0f, "invalid weight");
+    _weight = fabsf(weight);
+}
+
 Animate3D::Animate3D()
-: _speed(1)
+: _absSpeed(1.f)
 , _weight(1.f)
 , _start(0.f)
 , _last(1.f)
 , _animation(nullptr)
-, _playBack(false)
+, _playReverse(false)
 {
     
 }
diff --git a/cocos/3d/CCAnimate3D.h b/cocos/3d/CCAnimate3D.h
index fbda6328b5..67aff9a5c6 100644
--- a/cocos/3d/CCAnimate3D.h
+++ b/cocos/3d/CCAnimate3D.h
@@ -32,6 +32,7 @@
 #include "base/ccMacros.h"
 #include "base/CCRef.h"
 #include "base/ccTypes.h"
+#include "base/CCPlatformMacros.h"
 #include "2d/CCActionInterval.h"
 
 NS_CC_BEGIN
@@ -66,17 +67,17 @@ public:
     
     virtual void update(float t) override;
     
-    /**get & set speed */
-    float getSpeed() const { return _speed; }
-    void setSpeed(float speed) { _speed = speed; }
+    /**get & set speed, negative speed means playing reverse */
+    float getSpeed() const;
+    void setSpeed(float speed);
     
-    /**get & set blend weight*/
+    /**get & set blend weight, weight must positive*/
     float getWeight() const { return _weight; }
-    void setWeight(float weight) { _weight = weight; }
+    void setWeight(float weight);
     
-    /**get & set play back*/
-    bool getPlayBack() const { return _playBack; }
-    void setPlayBack(bool playBack) { _playBack = playBack; }
+    /**get & set play reverse*/
+    CC_DEPRECATED_ATTRIBUTE bool getPlayBack() const { return _playReverse; }
+    CC_DEPRECATED_ATTRIBUTE void setPlayBack(bool reverse) { _playReverse = reverse; }
     
 CC_CONSTRUCTOR_ACCESS:
     
@@ -86,11 +87,11 @@ CC_CONSTRUCTOR_ACCESS:
 protected:
     Animation3D* _animation; //animation data
 
-    float      _speed; //playing speed
+    float      _absSpeed; //playing speed
     float      _weight; //blend weight
     float      _start; //start time 0 - 1, used to generate sub Animate3D
     float      _last; //last time 0 - 1, used to generate sub Animate3D
-    bool       _playBack; // is playing back
+    bool       _playReverse; // is playing reverse
     std::map<Bone*, Animation3D::Curve*> _boneCurves; //weak ref
 };
 
diff --git a/cocos/3d/CCAnimation3D.cpp b/cocos/3d/CCAnimation3D.cpp
index 9455a3e47e..611b130fe1 100644
--- a/cocos/3d/CCAnimation3D.cpp
+++ b/cocos/3d/CCAnimation3D.cpp
@@ -30,7 +30,7 @@
 
 NS_CC_BEGIN
 
-Animation3D* Animation3D::getOrCreate(const std::string& fileName, const std::string& animationName)
+Animation3D* Animation3D::create(const std::string& fileName, const std::string& animationName)
 {
     std::string fullPath = FileUtils::getInstance()->fullPathForFilename(fileName);
     std::string key = fullPath + "#" + animationName;
diff --git a/cocos/3d/CCAnimation3D.h b/cocos/3d/CCAnimation3D.h
index a6f2a30a96..1d18cf6b0a 100644
--- a/cocos/3d/CCAnimation3D.h
+++ b/cocos/3d/CCAnimation3D.h
@@ -59,8 +59,10 @@ public:
         ~Curve();
     };
     
-    /**read all animation or only the animation with given animationName? animationName == "" read all.*/
-    static Animation3D* getOrCreate(const std::string& filename, const std::string& animationName = "");
+    /**read all animation or only the animation with given animationName? animationName == "" read the first.*/
+    static Animation3D* create(const std::string& filename, const std::string& animationName = "");
+    
+    CC_DEPRECATED_ATTRIBUTE static Animation3D* getOrCreate(const std::string& filename, const std::string& animationName = ""){ return create(filename, animationName); }
        
     /**get duration*/
     float getDuration() const { return _duration; }
diff --git a/cocos/3d/CCSprite3D.cpp b/cocos/3d/CCSprite3D.cpp
index f92e4dc475..30cfca2552 100644
--- a/cocos/3d/CCSprite3D.cpp
+++ b/cocos/3d/CCSprite3D.cpp
@@ -342,7 +342,7 @@ void Sprite3D::draw(Renderer *renderer, const Mat4 &transform, uint32_t flags)
     _meshCommand.setDepthTestEnabled(true);
     if (_skin)
     {
-        _meshCommand.setMatrixPaletteSize(_skin->getMatrixPaletteSize());
+        _meshCommand.setMatrixPaletteSize((int)_skin->getMatrixPaletteSize());
         _meshCommand.setMatrixPalette(_skin->getMatrixPalette());
     }
     //support tint and fade
diff --git a/tests/cpp-tests/Classes/Sprite3DTest/Sprite3DTest.cpp b/tests/cpp-tests/Classes/Sprite3DTest/Sprite3DTest.cpp
index ac8281b9f6..73b2784935 100644
--- a/tests/cpp-tests/Classes/Sprite3DTest/Sprite3DTest.cpp
+++ b/tests/cpp-tests/Classes/Sprite3DTest/Sprite3DTest.cpp
@@ -546,24 +546,23 @@ void Sprite3DWithSkinTest::addNewSpriteWithCoords(Vec2 p)
     addChild(sprite);
     sprite->setPosition( Vec2( p.x, p.y) );
 
-    auto animation = Animation3D::getOrCreate(fileName);
+    auto animation = Animation3D::create(fileName);
     if (animation)
     {
         auto animate = Animate3D::create(animation);
-        if(std::rand() %3 == 0)
-        {
-            animate->setPlayBack(true);
-        }
+        bool inverse = (std::rand() % 3 == 0);
 
         int rand2 = std::rand();
+        float speed = 1.0f;
         if(rand2 % 3 == 1)
         {
-            animate->setSpeed(animate->getSpeed() + CCRANDOM_0_1());
+            speed = animate->getSpeed() + CCRANDOM_0_1();
         }
         else if(rand2 % 3 == 2)
         {
-            animate->setSpeed(animate->getSpeed() - 0.5 * CCRANDOM_0_1());
+            speed = animate->getSpeed() - 0.5 * CCRANDOM_0_1();
         }
+        animate->setSpeed(inverse ? -speed : speed);
 
         sprite->runAction(RepeatForever::create(animate));
     }
@@ -652,7 +651,7 @@ void Animate3DTest::addSprite3D()
     sprite->setPosition(Vec2(s.width * 4.f / 5.f, s.height / 2.f));
     addChild(sprite);
     _sprite = sprite;
-    auto animation = Animation3D::getOrCreate(fileName);
+    auto animation = Animation3D::create(fileName);
     if (animation)
     {
         auto animate = Animate3D::create(animation, 0.f, 1.933f);