The invention discloses equipment for refining phosphorus by a hot method, which comprises a melting furnace and a reduction oxidation furnace, wherein the melting furnace is used for melting phosphorus ore into fusant and is provided with a feed inlet and a fusant outlet, the reduction oxidation furnace is provided with a furnace body and a blow gun; the furnace body is provided with a fusant inlet, a slag outlet and a smoke outlet, wherein the fusant inlet is connected with the fusant outlet, and one end of the blow gun is inserted in the furnace body. According to the equipment for refiningphosphorus by a hot method, impurities in flue gas containing phosphorus pentoxide are reduced, and the phosphorus pentoxide can be simply extracted and has high purity and low cost.