The invention relates to an external-use traditional Chinese medicine composition for treating osteomyelitis. The external-use traditional Chinese medicine composition is characterized by consisting of the following raw material medicines by weight: 9g of rhizoma smilacis glabrae, 9g of astragalus, 9g of radix codonopsis, 3g of scorpio, 10g of honeysuckle, 9g of radix trichosanthis, 3g of ground beeltle, 10g of rhizoma atractylodis, 6g of pangolin, 9g of rhzizoma drynariae, 9g of prepared radix dipsaci with yellow rice wine, 9g of rhizoma corydalis, 9g of earthworm, 9g of parasitic loranthus, 9g of selfheal, 9g of reed rhizome, 10g of moutan bark, 10g of saposhnicovia divaricata, 9g of radix scutellariae, 9g of mountain peony, 9g of radix angelicae, 9g of adenosma indianum, 9g of spatholobus suberctu, 9g of berba aristolochiae mollissimae, 10g of Chinese starjasmine stem, 9g of red flower, 12g of borneol and 150g of pig grease. The external-use traditional Chinese medicine composition is reasonable in compatibility of materials, has synergistic effect in raw material medicines, has effects of drawing out poison and removing blood stasis, strengthening the body resistance to enhance the immunity, dispelling the wind and festering, activating collaterals and erasing pains, relaxing the muscles and stimulating the blood circulation, and the like, is remarkable in curative effect, capable of eliminating osteomyelitis symptom within a short time, and has an effective rate of 100% and a cure rate of 91.4%.