Dispersion characteristics for AC charging pile distribution and monitoring of electric vehicles in mobile state, it proposes a communication method with the server by centralized GPRS module and Electric Vehicle Terminal (EVT). In order to meet the design requirements of the comprehensive monitoring system for remote access, system uses Struts, Spring and Hibernate framework based on Browser/Server (B/S). Network servers use weblogic cluster together with the Oracle database server and Coherence real-time database to meet the high number of concurrent users. Client pages are based on the full-featured ExtJs library with beautiful interface. The system consists of five functional modules, which are structured and closed contact with each other. Test results show that the system is stable and the average response time is short.