There are many causes of swollen lymph nodes, including infectious factors, such as viral and bacterial infections, as well as non-infectious factors, such as hematologic diseases, malignant tumors, and autoimmune diseases. It is important to formulate appropriate treatments according to the specific causes of the disease in order to make the swollen lymph nodes get better as quickly as possible. In case of viral infections, especially self-limiting viral infections, lymph node enlargement can disappear without medication. In the case of bacterial infections, timely application of antimicrobial drugs will also help to solve the problem of swollen lymph nodes as soon as possible. If there are blood system diseases or tumors or autoimmune diseases, appropriate treatment is also needed to solve the problem of swollen lymph nodes.