肺炎支原体 (MP)感染是引起呼吸系统疾病和全身性病变的常见病因 ,近年来发病率呈上升趋势 ,约占门诊呼吸道感染的 15 %～ 2 0 % [1] 。其病变范围从轻度呼吸道感染到严重的非典型肺炎 ,并可引起多系统损害 ,肺外表现包括神经、心脏、肝脏、肾脏和胃肠道病变及溶血性贫血、多关 Mycoplasma pneumoniae (MP) infection is a common cause of respiratory diseases and systemic diseases, the incidence in recent years showed an upward trend, accounting for about 15% to 20% of outpatient respiratory infections [1]. The disease ranged from mild respiratory infections to severe atypical pneumonia and caused multiple system damage. Extrapulmonary manifestations include neurological, cardiac, hepatic, renal and gastrointestinal lesions and hemolytic anemia, with multiple