A few tips for reference: 1. It is common for children to have swollen lymph nodes in the neck; the most common is inflammatory swelling of lymph nodes, which can be caused by inflammation and breakage of the mouth, ear, regional skin, etc.; if this is the case, the original disease should be dealt with, and then the swollen lymph nodes will slowly return to normal; 2. At present, tuberculosis is not uncommon, and tuberculosis of the lymph nodes in the neck is another case; 3. Third, some lesions of the lymphatic system itself can also manifest as swollen lymph nodes.