The utility model provides an air cooling device, include: the box has the inner chamber, first air -blower and second air -blower set up in interior intracavity to first air -blower and second air -blower interval, and first air -blower is used for along the inside intracavity induced air of first direction, and the second air -blower is used for sending wind along the second orientation with an opposite direction outside to the inner chamber. The device adopts two air -blowers to carry out induced air and air supply to the inner chamber respectively, can control the temperature in the inner chamber effectively, has avoided the inside temperature of the air cooler air cooler inside of leading to the fact low excessively to restrain by the circumstances of frost crack. Prevent effectively that the inside tube bank of air cooler from by the frost crack, having improved the reliability of air cooler.