Lymph nodes have an immune defense to the body, it will produce specific antibodies against bacteria, in general, lymph nodes are not easy to see, if you touch them with your hands, you can feel a little. However, some children have more obvious lymph nodes. Here’s what to do if a child has swollen lymph nodes in the neck. 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 oral cavity, ear and regional skin; 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 cervical lymph node tuberculosis can be seen in the neck unilaterally or bilaterally with multiple enlarged lymph nodes of different sizes. Initially, the swollen lymph nodes are hard, painless and can be pushed. 3, some lesions of the lymphatic system itself can also be manifested as swollen lymph nodes, and the lymphatic system itself can also suffer from neoplastic lesions, such as lymphoma. On the one hand, we say that swollen lymph nodes are an alarm of the disease and cannot be ignored, on the other hand, there is no need to panic, as swollen lymph nodes are still mainly inflammatory in most cases, and the incidence of lymphoma is still very low.