The invention relates to the technical field of thermal spraying, in particular to a method for adding patterns based on a thermal spraying method and mixed spraying powder. The method for adding the patterns based on the thermal spraying method comprises the steps that mixed gas is fed through a fuel opening of a spray gun; the mixed spraying powder is fed through a spraying opening of the spray gun, wherein the melting point of the mixed spraying powder is lower than that of a sanitary product, and the mixed spraying powder in the molten state can be merged with the bathroom product; and a spray nozzle of the spray gun is ignited, through combustion of the mixed gas sprayed out from the spray nozzle, the mixed spraying powder sprayed out from the spray nozzle is molten, the molten mixed spraying powder is sprayed to the surface of the bathroom product, and the patterns are formed on the surface of the bathroom product. In this way, anti-skid patterns or decorative patterns can be formed on the surface of the bathroom product through spraying, and the formed patterns both have the characteristics of contamination resistance and scrapping resistance.