Abstract: Objective：To explore the diagnosis and treatment of nonpuerperal mastitis.Methods：The clinical data of 48 patients diagnosed as nonpuerperal mastitis in our hospital in recent two years were retrospectively analyzed.Results：Among 48 cases of nonpuerperal mastitis，36 in 48 cases（75%）showed solid mass，10 cases（20.8%）showed mass combined with abscess，And 2 cases（4.2%） showed bilateral breast inflammation.In 36 cases showing solid mass，29 cases received oral Xihuang capsule treatment and 23 cases had the curative or effctive result，so  effective rate was  79.5%（18/29），the other 7 cases got operation treatment and recovered except that one cace had postoperative incisional infection with abscess； in 10 cases showing mass combined with abscess，7 cases got abscess drainage and 3 cases received abscess suction with gentamicin infusion.All cases got cured for abscess，afterward 9 cases were administrated with oral xihuang capsule and 6 cases got effecetive or cured with the effective rate was 66.7%.For 2 cases showing bilateral mass，they received twosided mammectomy or twosided segment exicion separately.Totally 15（31.3%）cases received  mass excision and the total effetive rate of oral xihuang capsule was 76.3%（29/38）.Conclusion：Surgery treatment is considered as the main radical treatment choice and  oral Xihuang capsule deserves more attention as a very important treatment.

Key words: nonpuerperal mastitis, Xihuang capsule, diagnosis, surgery treatment