The invention relates to the field of cooling garments, in particular to a cooling working garment for the extreme environment. The garment comprises a garment body, the garment body comprises a front body part and a back body part, and the front body part is provided with a zipper and can be opened toward two sides; a heat preservation bag which can be opened is sewed on the inner surface of the back body part, a water bag, a water pump and a storage battery are arranged in the heat preservation bag, and a cold storage bag is arranged in the water bag; a first flexible pipe and a second flexible pipe are arranged between the water bag and the water pump, the water bag is communicated with one end of the first flexible pipe, and a water inlet of the water pump is communicated with the other end of the first flexible pipe; the second flexible pipe back and forth winds into multiple segments and covers the inner surface of the front body part, two ends of the second flexible pipe enter the garment body from the front body part, penetrate through the garment body from the back body part and finally enter the heat preservation bag, and the water bag and a water outlet of the water pump are communicated with two ends of the second flexible pipe respectively. The cooling working garment for the extreme environment is good in cooling effect and long in effect time, is not complex in overall structure and low in weight, and can reduce the burden of a wearer.