Firstly, this paper discusses the development trends of management system of computer room, and points out the shortcomings of billing systems in computer room management generally used. Secondly, it studies about how to balance the load, how to make full use of teaching resources, how to reduce the workload of the managers of a computer room, and how to improve the utilization efficiency of a computer room. Finally, it proposes a smart billing system in computer room management, which well solves the problems in computer room management systems.