The invention provides a medicine for removing parasites in body surfaces of pigs. The medicine is prepared from the following raw materials in parts by weight: 8 parts of betel nuts, 5 parts of flos sophorae, 7 parts of szechwan chinaberry leaves, 9 parts of ramuli euonymi, 5 parts of fructus carpesii abrotanoidis, 8 parts of tamarindus indica, 4 parts of finger citron, 7 parts of acorus calamus, 5 parts of upright datura flower, 12 parts of cortex meliae, 6 parts of quispualis indica, 4 parts of cortex granati, 9 parts of caulis clematidis armandi, 3 parts of broadleaf holly leaves, 4 parts of houttuynia cordata, 15 parts of reed rhizome, 3 parts of folium eriobotryae, 5 parts of eclipta alba, 5 parts of radix scrophulariae and 8 parts of schisandra chinensis. The medicine disclosed by the invention is used for removing parasites in the body surfaces of pigs; and the medicine is good in effect on preventing and controlling various parasites such as ticks, mites, lice and the like in the body surfaces, and the medicine is free from adverse effect on the pigs and is safe; therefore, the medicine is a pollution-free agent for preventing and controlling external parasites of pigs.