As a new branch of optics, the invention of the laser not only germinates new vitality out of the archaic optics, but also upgrades the development of optical technique to a new height and an unprecedented breadth. Laser technique has already penetrated into all walks of life, and a bunch of burgeoning industries appear. Among which, laser demonstration constantly expands its application range in the field of dynamic visual art, with it's rich technical means and new presentation ability. This paper elaborates laser's basic principle and application, the means of laser demonstration, the application cases and the development potential of the originality of laser. <<