Energy-saving and environment-friendly boiler

The utility model discloses an energy-saving environment-friendly boiler which comprises a combustion chamber, a boiler body is arranged in the combustion chamber, one end of the boiler body is provided with an air outlet pipe, the other end of the air outlet pipe is provided with a purification box, the purification box is arranged on the outer side of the combustion chamber, a graphene oxide filter membrane and a hollow fiber filter membrane layer are arranged in the purification box, and an exhaust pipe is arranged at the lower end of the purification box. A heat transfer pipe is arranged in the boiler, and a communicating pipe is arranged at the upper end of the heat transfer pipe and extends out of the boiler to be connected with the heat preservation box. The graphene oxide filter membrane and the hollow fiber filter membrane layer are used for absorbing carbon disulfide, hydrogen sulfide, fluoride and other waste gas in the waste gas, the waste gas is prevented from being directly discharged into the a