With the rapid development of Internet and the double-quick increment of the number of netizens, the network has become more suitable platform for dissemination and high quality exhibition of advertisement. A variety of online advertising trading platforms are springing up like mushrooms, and CPC (cost-per-click) model of online advertising is gradually being accepted. However, the problem appears with this phenomenon is that click fraud prevention and detection of pressing, because it will have a direct bearing on whether CPC can become a long-term advertising model. This article talks about the characteristics of the CPC click-cheating means and analyzes the existent methods of preventing and detecting the CPC click-cheating, and puts forward some improvement measures on the traditional anti-cheating by monitoring IP address, effectively distinguishing the IP shared by many people, reptiles IP, as well as IP of robot cheat program; and proposed some new anti-cheating measures, such as anti-cheating by analyzing click-time, anti-cheating by adaptive threshold controlling, and so on.