The utility model provides a high-altitude operation uniform comprising a vest body, a pair of sleeves and straps on the vest body; the straps comprise a waist strap and two shoulder straps which are connected together; the outer surface of the shoulder strap which corresponds to the back surface of the vest body is provided with a reflective layer; a plurality of main light-emitting diode (LED) flat lamps and auxiliary LED flat lamps are respectively arranged on the shoulder straps and at the middle parts of the sleeves; the inner layer of the shoulder strap or the waist strap is provided with a battery pack; the battery pack is connected with the main and auxiliary LED flat lamps through leads; and main control switches and auxiliary control switches are respectively arranged on the leads. Since the reflective layer is arranged on the strap, the cooperation and personal safety of a worker can be guaranteed. In addition, the reflective layer is arranged on the back of the worker so that the worker is not affected. Since hand holding is not required, both hands of the worker are freed, so that the work is not hindered, a radiation direction and angle can be adjusted freely along with the movement of arms, and the operation of the worker is convenient.