The early web pages are the static web page, and the web pages of web-based real time system usually are the dynamic web page, it will access continuously the server and its databases. The program of the dynamic web page and databases will be executing on the server of web site and occupy actually many resources of the server. Thus，when the clients simultaneously visit the web site, the response of entire server system will be influenced directly. The BEPC II real time information system is the web-based real time system, we adopt the design of the multi-databases which are resident in the server machine, it can speed the responses to access the real time databases based on the web site.