The invention discloses a spherical sugarcane ash lightweight through-hole ceramsite having air purifying function. A technical scheme is characterized in that the through-hole ceramsite is composed of an attapulgite potter clay powder having air purifying function, sugarcane ash, activated clay waste residue, white carbon black, active alumina, hollow microsphere, sodium dodecyl sulfate, an attapulgite photocatalyst spraying liquid capable of being scrubbed; A production method comprises the following steps: materials stirring, extruding and granulating, drying, roasting, insulating, screening, immersing, drying, screening and performing sealed packaging to obtain the spherical sugarcane ash lightweight through-hole ceramsite. The spherical sugarcane ash lightweight through-hole ceramsite has the characteristics of large specific surface area, low bulk density, high rate of moisture absorption, excellent adsorptivity, good lightweight intensity, and integration of micropore and macropore, the through-hole ceramsite is placed in rooms, furniture cabinets, vehicles, airplanes, ships or other buildings for absorbing and degrading the pollutants such as formaldehyde, ammonia, benzene and TVOC, so that a purpose of purifying air can be achieved.