The invention discloses a treatment method of solid waste combustion. The method includes the following steps of sequentially adding absorber oil, solid waste and glycerin monostearate into a reactionstill in sequence, slowly adding high-temperature steam condensate into the reaction still to obtain a water-in-oil emulsion, atomizing the water-in-oil emulsion in a heat-preservation transit box through a spraying gun, and spraying the atomized emulsion into a combustion furnace to be combusted, wherein the solid waste is 2-hydroxy-3-naphthalic acid production solid waste or 2-isonaphthol production solid waste or a mixture of the two types of waste. The treatment method has the advantages that the solid waste is prepared into the emulsion according to the similarity description principle of the absorber oil, and the solid waste breaking link is omitted; the absorber oil is added as the solvent when the solid waste emulsion is prepared, the viscosity of the liquid waste can be effectively reduced, and the flowability of the liquid waste can be effecivley improved; and water-in-oil small oil drops are formed through atomizing of the high-pressure spraying gun, water in the oil dropsis boiled at a high temperature in the combustion furnace, and the problem of coking of the solid waste produced in the two processes in the combustion process is avoided.