The utility model discloses an intelligent energy -saving central air conditioner system, it includes: cold and heat source system, the new trend system, a heat pump set for freezing or the heat supply, arrange at the outdoor refrigeration cycle of being used for cooling water and the cooling tower that has the recovered energy function, filter the air, the heating, the cooling, the humidification, purification treatment's wind cabinet, pressurize and carry the cooling water on the water pump of cooling tower the cooling water, control actuating mechanism's intelligence control system, this system includes the DDC controller, and respectively with DDC controller electric connection's temperature sensor, air velocity transducer, an inverter, velocity of flow sensor, data and built -in procedure that the DDC controller was gathered through each sensor, to heat pump set, the cooling tower, the operating parameter of wind cabinet is controlled: the preferential power that uses hydraulic turbine output, the power of restock gas turbine output when not enough to guarantee that the temperature in the cooling tower keeps the within range in the settlement.