The invention discloses a veterinary medicine for treating swine streptococcosis. The veterinary medicine comprises, by weight, 120 g of hupeh fritillary bulb, 45 g of rhizoma alismatis, 20 g of roses, 20 g of ginkgo leaves, 20 g of senna leaves, 15 g of fermented soybeans, 10 g of chicory, 3 g of semen brassicae junceae, 140 g of sword beans, 65 g of yam, 30 g of semen allii tuberosi, 25 g of vines of multiflower knotweed, 20 g of glabrous greenbrier rhizome, 10 g of cornus officinalis, 10 g of malt, 10 g of kelp, 7 g of coix seeds, 7 g of allium macrostemon and 5 g of wild buckwheat rhizome. The veterinary medicine has the advantages that antibacterial active components which are extracted from compositions of natural traditional Chinese medicines are developed via long-term exploration with civil experience, accordingly, good swine streptococcosis curative effects can be realized by the veterinary medicine, and the veterinary medicine is short in treatment course, convenient to use and low in cost and has few side effects.