本文通过对541例5岁以下儿童急性呼吸道感染的临床症状及其与诊断肺炎价值的研究,表明呼吸增快与诊断肺炎的敏感性基本相同,但呼吸增快对诊断肺炎的特异性要较罗音为高。而乡村医生经过短期培训又不能很好地使用听诊器诊断肺炎,因此培训乡村医生学会数呼吸次数和观察胸凹陷以诊断肺炎和区别肺炎的轻重,是较简便而可靠的适宜技术,可以在我国农村推广,以降低婴幼儿肺炎的死亡率。 In this paper, 541 cases of children under the age of 5 years of acute respiratory tract infection and its clinical diagnosis of pneumonia and the value of the study showed that increased respiratory rate and the sensitivity of diagnosis of pneumonia is basically the same, but the diagnosis of pneumonia increased respiratory specificity of more than Luo Tone is high. However, after a short period of training, rural doctors can not use the stethoscope to diagnose pneumonia. Therefore, training rural doctors to learn the number of breaths and observing chest depression to diagnose pneumonia and distinguish pneumonia is a relatively simple and reliable suitable technique that can be used in rural areas of our country Promoted to reduce infant pneumonia mortality.