Mixed subcutaneous masses in the armpit may be superficial lymph node enlargement, boils or paronychia. 1. Superficial lymph node enlargement: if there is pain, it is usually lymphadenitis, which can be treated with antibiotic drugs such as amoxicillin; if it is difficult to cure. And no obvious pain, hard texture, it is recommended to go to the hospital as soon as possible, the pathology biopsy, to determine the specific nature of the enlarged lymph nodes, and then by the doctor according to the nature of its choice of further treatment options. 2. Boils: Infected hair follicles in the armpits, forming boils, which may include redness and swelling of the surface skin, accompanied by pain, and abscess formation in the advanced stage. It can be treated with topical mupirocin ointment, etc. After abscess formation, it can be surgically incised and drained, and the medication can be changed regularly. 3. Associate breasts: If the patient is a woman, the possibility of associate breasts should be considered, and it is recommended to go to the surgery to do the corresponding examination to clarify the diagnosis. It is recommended that patients go to the hospital in time, improve the examination, clear diagnosis, and then follow the doctor’s instructions to be treated accordingly.