A new energy optimization and management model of combined cooling and power（CCP） distributed energy supply system is proposed. A generation plan can be determined by the optimal economic principle according to the forecast curves of electricity and cooling loads of each building at the demonstration point. Not only the cooperation of CCP and electric air conditioning， but also the influence on economic operation of price of electricity from public grid， price of fuel and price of the electricity sold to grid are considered in this model. The load data of some typical months are chosen for simulation purpose， and the results are adjusted to match the actual operation. The results show that the generation curves of micro turbine made by this optimal model can satisfy the operation economy and primary energy ratio index requirements of this project.