Air guide structure of cooling device of vehicle

The air guide body (31) is in a plate shape having attachment parts (36) attached to the vehicle body side on both sides in the vehicle width direction, and in an air guide body attached state in which the attachment parts (36) are attached to the vehicle body side, the air guide body (31) hangs down and extends below the cooling device. The reinforcing plate (32) is integrally provided with a plate-shaped reinforcing part (37) and a plate-shaped vertical wall supporting part (38), wherein the plate-shaped reinforcing part (37) is overlapped and fixed on the mounting part (36) from the front or the rear of the vehicle to reinforce the mounting part (36); and the plate-shaped vertical wall supporting part (38) is bent and extends from the reinforcing part (37) to the front or the rear of the vehicle. The vertical wall (33) is fixed to the vertical wall support section (38), and extends further toward the front of the vehicle than the air guide body (31) on both sides of the air guide body (31) in the vehicle w