The invention discloses a nursing medicine for treating acute suppurative arthritis. The nursing medicine consists of the following components: lycium ruthenicum murr, radiate bulbophyllum herb, lobelia taliensis diels, root of delavay dobinea, common monkshood rooflet, China mahonia, herba elsholtziae, ranunculus sceleratus, bhotan milkvetch herb, dichrocephala integrifolia, strophanthus divaricatus, root of philippine flemingia, aeginetia sinensis G. beck, hancock swallowwort herb, thelephora vialis, camphortree leaves, false Chinese swertia herb, Chinese waxgourd leaves, solitary takin, scaphium scaphigerum, mile swertia herb, elaeagnus loureirii champ, hoodshaped alocasia rhizome, an oily ingredient, a surfactant, a suspending aid, gelatin, mannitol and 1,2-hydroquinone. A spray is prepared from the components above. The nursing medicine disclosed by the invention can be used for sterilizing and diminishing inflammation, effectively preventing infection, and can be also used for regulating qi and promoting circulation of blood, relieving swelling and stopping pain, and relieving swelling and pain in joints as well as muscle spasm; in addition, the nursing medicine can be used for dispelling wind and eliminating dampness, clearing away heat and toxic materials, and preventing osteomyelitis and hyperostosis, and can take a certain effect on such symptoms in some patients as chill of high fever, convulsion and the like; and the nursing medicine is good in medicine absorption rate, free from side effect, convenient to use and low in cost, and the nursing medicine is capable of enhancing a treatment effect and promoting recovery.