The invention relates to the technical field of coatings, and discloses a shell powder strong adsorption coating including the raw materials in parts by weight: 80-100 parts of shell powder, 20-40 parts of talc powder, 6-10 parts of cellulose, 8-20 parts of sodium aliphatate, 10-20 parts of lactic type polyol, 6-10 parts of mica powder, 10-30 parts of an ultraviolet absorbent, 20-40 parts of redispersible adhesive powder, 10-20 parts of nano titanium dioxide powder, 4-10 parts of zinc oxide, 10-20 parts of a rare earth antibacterial agent, 5-15 parts of silica sol, and the balance water. According to the shell powder strong adsorption coating and a preparation method thereof, with adopting of sodium aliphatate, because sodium fatty acid has the bactericidal and mildew-proof actions, harmful bacteria in a room can be eliminated and human health is facilitated; the ultraviolet light absorber has high absorption ability to ultraviolet rays in sunlight and a fluorescent lamp, the ultraviolet light absorber is added in the coating, the damage of the ultraviolet rays to the coating can be reduced, coating film powdering, aging and dulling are prevented, and people live healthier.