The invention discloses light cylindrical sugarcane ash through-hole ceramsite with the air purification function. According to the technical scheme, the light cylindrical sugarcane ash through-hole ceramsite is characterized by being prepared from attapulgite argil powder, sugarcane ash, activated clay waste residues, white carbon black, activated aluminum oxide, hollow microspheres, sodium dodecyl sulfate, scrubbable attapulgite photocatalyst spraying liquid and the like which have the air purification function; the ingredients are subjected to stirring, extrusion granulating, drying, calcining, heat preserving, screening, soaking, drying, screening, sealing and packaging, and then the light cylindrical sugarcane ash through-hole ceramsite with the air purification function is obtained. The light cylindrical sugarcane ash through-hole ceramsite with the air purification function has the advantages of being large in specific surface area, low in stacking density, high in moisture rate, excellent in adsorption performance, light, high in intensity and capable of integrating micropores and macropores, and is suitable for being placed in a room, a furniture cabinet, a vehicle, an airplane, a ship or other buildings to adsorb and degrade contaminants such as formaldehyde, ammonia, benzene and TVOC, so that the purpose of purifying air is achieved.