Building energy consumption accounts for a large proportion of energy consumption, and central air conditioning is widely used in public buildings, abuse and the lack of management make public buildings’ air conditioning energy consumption very high, especially in summer. We aimed at universities’ multi-line central air conditioning system, and in order to make terminal intelligent control system control strategic directions, we did the transformation of intelligent terminal control based on group decisions. It controls the air conditioning control panel’s electrical signals, data judgment and conveyance through Single Chip Microcomputer(SCM),and it calculates data through total server. Its control mode combines automatic control and group decisions, and users can query and send the order through a WeChat’s official account, which is connected to the database through the network. And the database entries data about air conditioning usage information, the timetable of working and studying, etc. From designing to simulating, the energy saving effect is remarkable, and the most ideal energy saving is up to 84%,in addition, this transformed system is acceptable to most students in the process of research.