The invention discloses a waste disposal method. An incinerator is adjacent to a tunnel kiln. The waste disposal method comprises: S1, waste pre-treatment: waste sorting, screening and magnetic separation, picking out noncombustible substances, and conveying residual waste into a landfill pond; S2, incineration: conveying the waste in the landfill pond into the incinerator for incineration; S3, disposal of incineration flue gas: delivering the flue gas generated after incineration into a water processor for dust removal, and then conveying the flue gas into the tunnel kiln to enter a high-temperature section from a low-temperature section of the tunnel kiln for secondary combustion so as to remove dioxin from the flue gas, and finally discharging the flue gas through a smoke vent; S4, recycling of incineration waste residue: conveying waste residue in the incinerator and waste water in the water processor into a brick material mixing pool for mixing, conveying the mixture into a brick forming machine for molding green bricks, and conveying the molded green bricks into the tunnel kiln for firing and drying. Through the above method, safe and effective waste disposal is achieved, and the waste disposal method has the advantages of wide application scope, high treatment efficiency and low cost.