The design and implementation of gobang battle cell phone network games Abstract In modern society, more and more cell phones and other wireless devices come into the work and life of ordinary people. With the popularization and application of the 3rd Generation of Digital communication technology,the development of Java-based software in the use of mobile phones is very broad, mobile value-added services are more and more. It plays an import role to enrich people's lives and provide easier access to information. Based on J2ME technology and a computer network running game flow, sub-module developing gobang game software on-line. In this paper, the following points as a focus of study and research: 1、The overall system structure. According to the design goals, with the general operation of the network game flow, gives the system design, and explores the key technology, which is used by the design of this system. 2 、The realization of the phone MIDP client. MIDP client is the only game client, the main functions include connecting the server to check the status, playing games and keeping the exchange of data with the server. 3.、The implementation and design of background system. Background is to deal with the Internet database to verify the identity of users, processing the data, which are sent by the clients.http://www.16sheji8.cn/ Due to the restrictions of objective conditions, the system's test completed in the Samsung handset simulator. But it is contrasted with a certain degree of practical value. . Key words: J2ME; handset game; servlet