The causes of axillary enlargement include trauma, lymph node tuberculosis, malignant tumors, etc. It is recommended to go to the hospital in time to clarify the cause of the disease, and standardize the treatment through general treatment, drugs or surgery. 1. After trauma causes axillary enlargement, you can improve the symptoms through rest, massage and other measures to reduce the enlargement of the armpit. 2. When Mycobacterium tuberculosis infects the lymph nodes in the armpit, it can cause enlargement of the armpit. Anti-tuberculosis drugs such as rifampicin, isoniazid, pyrazinamide and streptomycin can be taken to control the inflammation and alleviate the symptoms. It is recommended to follow the doctor’s instructions to use the drugs, the emergence of adverse reactions to timely consultation, drug allergy is prohibited. 3. Breast cancer, thyroid cancer and other malignant tumors that metastasize to the axillary lymph nodes will cause painless enlargement of the axilla, and the symptoms can be controlled by surgical treatment, radiotherapy and targeted drug therapy.