淋巴结是人体淋巴系统的一个组成部分。它的主要功能是产生淋巴细胞,是人体的防御屏障,有阻拦和吞噬病菌、防止病变蔓延的作用。小儿淋巴系统自出生后起码10年内尚处于发育、完善阶段。新生儿时期大多不易触摸到淋巴结,而到了婴幼儿时期以后就可以在颈、颌下、耳前、腹股沟等处的浅表摸到绿豆或黄豆粒大的单个、柔软 Lymph nodes are part of the body’s lymphatic system. Its main function is to produce lymphocytes, is the body’s defensive barrier, blocking and phagocytosis, prevent the spread of disease. Pediatric lymphatic system since birth at least 10 years is still in development and improvement stage. Most of the neonatal period is not easy to touch the lymph nodes, and to infants and young children after the neck, submandibular, ear, groin and other superficial touch of mung bean or soybean grain large single, soft