The invention discloses a preparation method of self-cleaning active carbon material which is used in the carbon carving process; and the following method is used for preparing the active carbon material: firstly, powder active carbon, a caking agent and an accelerator are mixed together and then shaped by pressing, and then carbonized under high temperature to obtain the active carbon material. With simple processing art and low cost, the invention can produce material with self-cleaning function, and can catalyse and decompose pollutants adsorbed in the pores of the active carbon into water, carbon dioxide and other decomposition products to separate from the surface of the active carbon; so that the active carbon has an infinite adsorption capacity and permanent use life without activation and regeneration; and the active carbon can continuously adsorb and decompose the indoor toxic air. All arts and crafts made of the active carbon not only can beautify the environment, but also can absorb and decompose the indoor toxic air in a long-term and effective way.