The invention discloses an energy-saving air processing apparatus. The energy-saving air processing apparatus comprises an air processing apparatus body, a gas washing pool and a steam pool, the gas washing pool is arranged at the top in the air processing apparatus body, spraying plates are vertically arranged in the gas washing pool, an active carbon adsorption film is arranged between the inner wall positioned at one side of the gas washing pool and the spraying plate, the top at one side of the steam pool is communicated with a steam generator through a vent pipe, and the steam generator is communicated with a reflux pump through a pipeline. According to the invention, when high heat exhaust gas generated by fire coal passes through the vent pipe, water in the steam pool is heated and the steam is generated, the steam energy is used for driving the impellers of the steam generator to rotate, and a purpose of generating can be achieved, the structure of the air processing apparatus can effectively use the heat in the exhaust gas, so that the energy waste is reduced, and the usage efficiency of the fire coal is increased.