An ultrasonic atomizing cooling apparatus is provided. The ultrasonic atomizing cooling apparatus includes a container having working fluid contained therein, an ultrasonic vibration device, a heat-exchange chamber and an atomized droplet passage and a vapor passage made of flexible tubes. By ultrasonically vibrating the working fluid in the container, atomized droplets are generated. The atomized droplets, driven by a fan or a propeller, cause a pressure difference between the atomized droplet passage and the container. The pressure difference propels the atomized droplets to the atomized droplet passage, and sprays the droplets onto a wall surface of the heat-exchange chamber that is in contact with a heat-producing body. The heat-producing body is cooled down. Depending on the position orientation of the heat-producing body, the spraying direction of the present apparatus can be changed. The flexibility of use of the present apparatus is increased.