The invention discloses an automobile tyre cooling device. The automobile tyre cooling device aims to overcome the defects that the tyre temperature is high in the driving process of the automobile, the tyre is easy to age, even tyre burst risk occurs and great potential safety hazard is brought to driving. The automobile tyre cooling device comprises a base arranged on the inner side of a tyre cover; and a blowing impeller capable of blowing air towards the tyre is arranged on the base. In the driving process of the automobile, the blowing impeller blows air to the tyre, so that the tyre is cooled, too high temperature of the tyre is avoided, ageing of the tyre is delayed, the tyre burst phenomenon caused by too high temperature of the tyre is avoided, and the potential safety hazard caused by too high temperature of the tyre is eliminated.