支原体是介于细菌与病毒之间的微生物[1] 。支原体肺炎好发于学龄儿童及青少年。有典型的临床表现及流行病学史。近年来报道趋向偏小年龄。诸如婴幼儿肺炎支原体感染 ,我科自 1 998年 6月至 1 999年 3月间收住的小儿支原体肺炎 81例中 ,有 46例婴幼儿支原体肺炎 ,现报告如下。1 Mycoplasma is a microbe between bacteria and virus [1]. Mycoplasma pneumonia occurs in school-age children and adolescents. A typical clinical manifestations and epidemiological history. In recent years, reports tend to be younger age. Mycoplasma pneumonia such as infantile infection, our department from June 1998 to March 1999 admitted 81 children with mycoplasma pneumonia, 46 cases of infantile mycoplasma pneumonia, are as follows. 1