This paper describes the concept, scientific basis, key technical points and the significance of sand industry. As a scientific conceit for the utilization of desert Gobi, the essence of sand industry is to take the advantage of the sunlight resource in the Gobi area to raise the photosynthetic productivity with the help of modern technical achievements and effective market-oriented management system, so as to gain benefits both economically and ecologically. The technical principle being employed in the present sand industry as so called “more lighting, less water, new technology, high benefit” is expounded. The application results in Zhanye prefecture of Gansu province is introduced.