为探讨有助于婴幼儿哮喘的诊断因素，系统分析了１００例婴幼儿哮喘的临床特征并与对照组比较。结果表明：反复喉部呼气性“咝咝”声，有诱因时加重，无诱因时减轻是病史中最初考虑诊断的关键；双肺高调呼气性喘鸣音是确诊的客观体征；个人过敏史及家族史有重要参考价值，应特殊强调；肺叩诊过清音、肺肝界下移、ＰａＣＯ２降低及胸片气肿改变对可疑性哮喘有一定参考作用。 To explore the diagnostic factors contributing to asthma in infants and young children, the clinical characteristics of 100 infants with asthma were systematically analyzed and compared with the control group. The results showed that: repeated laryngeal breath “咝 咝” sound, incentives have aggravated, no incentive to reduce the time taken for the first consideration in the diagnosis of the key; high lung breath lung tone is a confirmed objective objective; personal allergies History and family history have important reference value, should be specially emphasized; lung percussion over-voice, lung and liver sector down, PaCO2 reduction and emphysema change on suspicious asthma have some reference.