Lymph node enlargement of 10mm may be caused by infection, tumor and other factors, according to the cause of the disease, need to follow the doctor’s advice to appropriate treatment. Lymph node is a kind of lymphatic tissue distributed all over the body, which is an important immune organ. The diameter of normal superficial lymph nodes is within 0.5cm, and the surface is smooth and soft. 1. Infection: When the human body is infected by bacteria and viruses, the immune system will be destroyed, and the lymph nodes will be infected, causing symptoms such as lymph node enlargement and pain. If the patient’s lymph node enlargement is stimulated by bacterial infection, it can be treated with antibiotics such as azithromycin, cefaclor, etc. If it is caused by viral infection, it can be treated with antiviral medicines such as ribavirin and acyclovir. 2. Tumor: Tumor metastasis and metastasis to lymph nodes can also cause lymph node enlargement. If the axillary lymph nodes are enlarged and tumor cells are found in the examination, it will be highly suspected that the tumor of breast cancer has metastasized to the lymph nodes. And lymphoma, lymphocytic leukemia and other diseases can also be found to have local lymph node enlargement. If the diagnosis is confirmed to be due to malignant tumor metastasis or lymphoma, surgery, radiotherapy, targeted therapy, bone marrow transplantation and other therapeutic measures can be chosen. If patients find that the lymph nodes in a certain part of the body are enlarged, they need to consult a doctor in time for examination and symptomatic treatment.