诺卡氏菌属需气放线菌一类,广泛存在于土壤中。人类诺卡氏菌病一般由外源性如皮肤创伤感染所引起,内源性显性感染不常见。本文报道一例红斑狼疮患者因较长时间使用激素及广谱抗菌素而发生的内源性诺卡氏菌左臀部深部脓肿,经分离培养阳性,并鉴定菌种为白乐杰诺卡氏菌(Nocardia pelletieri) Nocardia genus gas actinomycetes, widespread in the soil. Nocardiosis of humans is usually caused by exogenous skin trauma infections, which are uncommon. This article reports a case of lupus patients with lupus erythematosus due to prolonged use of hormones and broad-spectrum antibiotics and endogenous Nocardia left hip deep abscess, isolated and cultured positive, and identified strains as bacteria (Nocardia pelletieri)