A work site protection box comprises a box body, wherein the box body comprises a bottom plate, side plates symmetrically fixed on the two sides of the bottom plate, a back plate fixedly connected with the bottom plate and the side plates, and a top plate fixedly connected with the side plates and the back plate; each side plate, the back plate and the top plate of the box body are each provided with an air-cooling cooling layer, a heat insulation layer and a protective layer in sequence; the air-cooling cooling layers comprise support bodies attached to the side plates, the back plate and thetop plate, air ducts which are continuously arranged on the support bodies, and horn mouths arranged at one ends of the air ducts; the smaller ends of the horn mouths are connected with the air ducts; the air ducts on the side plates, the back plate and the top plate are parallel to each other and are parallel to the bottom plate; the box body further comprises a front plate rotationally connected with the bottom plate, and hinges symmetrically arranged at the two sides of the front plate; and the other ends of the hinges are connected with the side plates.