Mobile e-commerce is the use of electronic business mobile phone, PDA and palm computer wireless terminals of the B2B, B2C or C2C. It will be the technology of Internet, mobile communication technology, the short distance communication and information processing technology the perfect combination, so that people can carry out a variety of business activities at any time, any place, whenever and wherever possible, the realization of online and offline shopping and trading, online electronic payment and various trade activities, business activities, financial activities and related comprehensive services activities etc.. Study according to the latest data analysis of domestic and foreign electronic commerce development present situation, summarizes the key technology of WAP and J2ME in mobile environment, and the prospect of the future development trend of electronic commerce.