A combustion furnace tail gas purification treatment utilizing device comprises a heat exchanging chamber, and is characterized in that the outer surface of the heat exchanging chamber is covered with heat preserving cotton; a bent coiled pipe is arranged in the heat exchanging chamber; a gas inlet is formed in the left end of the coiled pipe; the exterior of the coiled pipe is sleeved with a sleeve; the surface of the sleeve is evenly provided with a plurality of heat exchanging leakage holes; a water distributing disk is arranged in the heat exchanging chamber; a plurality of spraying heads are arranged at the bottom of the water distributing disk; the right end of the coiled pipe is communicated with a pressure boosting pipe which is provided with a pressure boosting draught fan; a cyclone separator is installed at the right end of the pressure boosting pipe; a conveying pipe is arranged on the top of the cyclone separator, and is provided with a filtering box; and a plurality of filtering nets are arranged in the filtering box. Tail gas with a high temperature and high heat characteristic exists in the coiled pipe of the combustion furnace tail gas purification treatment utilizing device to heat the sleeve, and exchanges heat with tap water, the staying time of the tail gas in the heat exchanging chamber is prolonged by the bent coiled pipe, so that the tap water can be sufficiently heated, and the heat transfer efficiency is higher.