The invention relates to a cooling system so as to solve the problem that an existing cooling system is low in efficiency and high in noise. The cooling system comprises a turbo-charging device, a box, a radiator and a first ejector. One side face of the box is an opening. The radiator is mounted in the box. The air outlet face of the radiator right faces the opening of the box. The periphery of the radiator and the side walls of the box are sealed together. The first ejector is mounted on the air inlet side of the radiator. A nozzle right faces the air inlet face of the radiator. The first ejector is connected with the turbo-charging device through a pipeline. Air blown by the turbo-charging device is sprayed out by the first ejector through the pipeline. A wall plate, located on the air inlet side of the radiator, of the box is provided with an air inlet used for introducing air outside the box into the box. High-speed airflow sprayed towards the radiator from the ejector carries surrounding air to pass through the radiator together, so that air quantity is increased; the ejectors and the turbo-charging device are connected through the pipelines, the turbo-charging device is mounted on the other portion, with sufficient space, of a machine, and accordingly space limitation can be broken through.