Because of the specialty of natural monopolistic industry, it occupies a very important position in national e-conomy, and government pays much more attention to its price regulation all the time. After pointing out the problems of price regulation of Chinese natural monopolistic industry, the article analyzes and comments on price cap regulation of developed countries, puts forward its advantage and disadvantage, and compares it to rate of return regulation. Finally on the base of them and considering Chinese reality, it classifies natural monopolistic industry according to certain standard, and designs price regulation model of the industry with Chinese characters.