diff --git a/cocos/math/Quaternion.cpp b/cocos/math/Quaternion.cpp
index 4750d6d797..90cd1667c7 100644
--- a/cocos/math/Quaternion.cpp
+++ b/cocos/math/Quaternion.cpp
@@ -53,15 +53,6 @@ Quaternion::Quaternion(const Vec3& axis, float angle)
     set(axis, angle);
 }
 
-Quaternion::Quaternion(const Quaternion& copy)
-{
-    set(copy);
-}
-
-Quaternion::~Quaternion()
-{
-}
-
 const Quaternion& Quaternion::identity()
 {
     static Quaternion value(0.0f, 0.0f, 0.0f, 1.0f);
diff --git a/cocos/math/Quaternion.h b/cocos/math/Quaternion.h
index 2e5b1d46e7..c74521a4a3 100644
--- a/cocos/math/Quaternion.h
+++ b/cocos/math/Quaternion.h
@@ -125,18 +125,6 @@ public:
      */
     Quaternion(const Vec3& axis, float angle);
 
-    /**
-     * Constructs a new quaternion that is a copy of the specified one.
-     *
-     * @param copy The quaternion to copy.
-     */
-    Quaternion(const Quaternion& copy);
-
-    /**
-     * Destructor.
-     */
-    ~Quaternion();
-
     /**
      * Returns the identity quaternion.
      *