本文报告154例新生儿肺炎的临床表现与日龄的关系。结果表明新生儿肺炎临床表现的差异性与其日龄大小密切相关,日龄一周内者咳嗽、气急、湿罗音的出现率明显少于一周后者(P<0.025),低体温出现率明显多于二周后者(P∧0.025,支气管肺泡呼吸音出现率明显多于二周后者(P<0.01)。说明日龄是新生儿肺炎临床表现差异的重要因素。 This article reports 154 cases of neonatal pneumonia clinical manifestations and the relationship between age. The results showed that the difference of clinical manifestations of neonatal pneumonia was closely related to the size of their day of age. The occurrence rate of cough, shortness of breath, and wet rales were significantly less than one week later (P <0.025), and the incidence of hypothermia was significantly higher The incidence of bronchial alveolar respiratory sounds was significantly higher in the second week than that in the second week (P <0.01), indicating that the age of day is an important factor in the difference of clinical manifestations of neonatal pneumonia.