目的了解儿科呼吸道感染中肺炎支原体感染情况。方法采用被动凝集法检测患儿血清中肺炎支原体抗体滴度。结果 265例呼吸道感染患者,有95例感染肺炎支原体,阳性率为35.85%。结论在儿科呼吸道感染疾患中,应把肺炎支原体抗体滴度作为一项常规项目来检测。 Objective To understand the infection of Mycoplasma pneumoniae in pediatric respiratory tract infection. Methods The titers of Mycoplasma pneumoniae in serum were detected by passive agglutination. Results Among 265 cases of respiratory tract infection, 95 cases were infected with Mycoplasma pneumoniae, the positive rate was 35.85%. Conclusions Mycoplasma pneumoniae antibody titers should be tested as a routine item in pediatric respiratory infections.