Electronic cigarettes is a none-igniting substitute of the cigarette, it has some characteristics with the traditional cigarettes, such ad making you refresh, fulfilling the smokers' needs; But it has much more different with the traditional cigarettes substantially, such as no tar, no ignition, no 460 kinds of chemical substances that can lead to respiratory and cardiac system diseases, no the carcinogenic in the traditional cigarettes. Since the using of tobacco of the history of human, people started to know the know the bad effects of tobacco to the health of human, who has gotten through The Framework convention on tobacco control (FCTC)(on 21 may 2003),it called on every country should take into account that the threats of tobacco to the health of the health of people. As a result, the technology of getting rid of tar and finding a substitute of cigarette has been developed.