Children presenting with swollen lymph nodes, especially in the neck or abdomen, should first be seen in pediatric surgery so that the surgeon can first palpate and determine the nature of the enlargement. Most of the swollen lymph nodes in the neck are associated with upper respiratory tract infections in children, such as fever, cold, cough, and sore throat, causing reactive enlargement of the lymph nodes in the neck. In this case, the lymph nodes in the neck are enlarged, the size of a soybean, with clear boundaries, no pressure pain, and can be pushed, and the lymph nodes in this case do not need special treatment, and regular ultrasound and routine blood tests are sufficient. If the lymph nodes are large, hard and red, and multiple lymph nodes are fused into a mass and cannot be pushed, it is recommended to seek emergency treatment and let the surgeon feel them. If it is inflammation, treat it with symptomatic anti-inflammatory treatment. If lymph node hyperplasia due to hematologic disorders is suspected, such should be taken for biopsy.