The pediatric surgeon will do an ultrasound of the neck to determine the cause of the swollen lymph nodes, as well as a routine blood test to check the basic condition of the blood system. Most of the swollen lymph nodes are fine. The skin on the neck of children is relatively thin, and when they have a cold or throat inflammation, the lymph nodes appear reactive enlargement, which is slightly enlarged, the size of a soybean, smooth surface, soft texture, and can be pushed and slid, this kind of lymph nodes are generally reactive hyperplasia, and do not need clinical treatment. If the lymph nodes are red, swollen, painful, or inflamed, or if multiple lymph nodes are fused into a large, hard mass that cannot be pushed, this type of lymph node requires further surgical treatment.