在高中数学教材中,空间向量数量积的坐标形式是先证明空间向量数量积的性质,而后由性质推出坐标形式,由于空间向量数量积的性质的证明利用了立体几何图形,十分繁琐,本文意在通过先由定义推出坐标形式,至于性质,就只是简单的代数运算了. In high school mathematics teaching materials, the coordinate form of the space vector quantity product is to prove the property of the space product quantity product first, and then the coordinate form is introduced by the nature. Because the proof of the property of the space vector quantity product makes use of the solid geometry, it is very complicated In the first by the definition of the introduction of coordinate form, as the nature, it is only a simple algebra.