The control target of central air?conditioning refrigera?tion station energy?saving optimization control system is maximizing operating efficiency of the entire cold water machine room(or mini?mizing operating energy)via coordinately controlling cold water ma?chine room automation control system based on real?time cooling load control and the scheduled control strategy.Taking energy?sav?ing optimization of the central air?conditioning system in a confer?ence center of Suzhou Industrial Park in Jiangsu Province as an ex?ample, the air conditioning system configuration, the system princi?ple, system structure and strategic model before and after the trans?formation are introduced.The conference center air conditioning