The utility model discloses a novel cooling system of flywheel energy storage ware, including PRESSURE DETECTOR, a sealing cover, the cavity bearing, the installation bearing, spiral air pipe, radiator fan, an installation rack and a fixed rack, send air pipe, the forced draught blower, the flywheel, including a motor, an end cap, a controller, and a cover plate, vacuum apparatus, thermodetector, the air exhauster, the ventilation pipe, the air -cooler, PRESSURE DETECTOR sets up with thermodetector and is leading to the air tube interface end, sealed lid is installed on the vacuum apparatus top, bearing Kit is in the cavity bearing in the installation, motor and flywheel from top to bottom order are installed on the cavity bearing, spiral air pipe passes through the mounting bracket setting on the installation bearing, radiator fan sets up at spiral air pipe both ends, the forced draught blower is through sending air pipe to link to each other with spiral air pipe bottom, the ventilation pipe sets up the air exhauster and its end sets up the air -cooler, PRESSURE DETECTOR and thermodetector can detect the pipeline pressure temperature of pipeline, radiator fan passes through the high temperature of spiral air pipe in with the cavity bearing and discharges.