感冒、气管炎、呼吸道疾病是小儿时期的常见病,一年四季均可发病,其中以冬、春季发病最高。我们知道,呼吸道包括上呼吸道(鼻、咽、喉、耳咽管等)及下呼吸道(气管、支气管、肺等)。由于婴幼儿的鼻部和鼻咽腔相对短小,鼻道狭窄,没有鼻毛,粘膜柔嫩,血管丰富,所以很容易受到感染。而且当发生炎症时又容易引起粘膜充血肿胀,造成鼻腔堵塞,影响正常呼吸,所以婴儿感冒时常常使吃奶发生困难,并出现张口呼吸。另外,婴幼儿的耳咽管相 Cold, bronchitis, respiratory disease is a common childhood disease, all year round can be disease, of which the highest incidence in winter and spring. We know that the respiratory tract includes the upper respiratory tract (nose, pharynx, larynx, eustachian tube, etc.) and the lower respiratory tract (trachea, bronchus, lungs, etc.). Because infants and young children’s nose and nasopharyngeal cavity is relatively short, narrow nose, no nose hair, mucous membrane tender, rich in blood vessels, it is susceptible to infection. And when inflammation occurs easily lead to congestion and swelling of the mucous membrane, resulting in blockage of the nasal cavity, affecting normal breathing, so infants often make feeding difficulties, and mouth breathing. In addition, infant eustachian tube phase