The invention discloses an art paper mouldproof and deodorant agent, which is prepared from sorbitol, hydroxy diphenyl ether, chitosan, alcohols, zinc sulfate, a surfactant, soybean oil, starch cellulose, a dispersing agent, a tea extract, an aloe extract, a Verbena officinalis extract, and a modifying agent by certain method. The mouldproof and deodorant agent provided by the invention not only is non-toxic, has no peculiar smell and excellent mouldproof and deodorizing finishing effect, but also has good integration with paper during use and excellent compatibility, avoids destruction to the flexibility of paper itself, breaks through the defects of traditional anti-mould agent, and has very strong practical value.