Axillary bulge is usually caused by enlarged lymph nodes, axillary tumors, paratesticular breasts, etc. Patients can be eliminated by oral antibiotics, surgical excision, chemotherapy, radiotherapy, surgery and other methods. 1. Enlarged lymph nodes: Usually the axillary bulge caused by lymph nodes, if it is inflammatory lymph nodes, it can be treated according to different pathogens, as prescribed by the doctor: amoxicillin, cefaclor and other antibiotics to treat bacterial infections; acyclovir, ribavirin and other antiviral drugs to treat viral infections; isoniazid, rifampicin and so on to treat tuberculous lymph node infections. In case of malignant lymph node metastasis or lymphoma, in addition to treating the primary tumor, patients need to undergo surgical resection, and if necessary, chemotherapy, radiotherapy and other comprehensive treatment. 2. Benign axillary tumors: such as lipoma, fibroma, etc., axillary bulge caused by tumors. If the tumor is small, generally do not need special treatment, go to the hospital regularly to check the situation. If the lump grows rapidly, the volume is too large, and accompanied by local pain and other uncomfortable symptoms, patients need to remove the lump under local anesthesia. 3. Associate breasts: If the axillary bulge is caused by associate breasts, patients can choose the surgical method for treatment, because associate breasts will produce pain and discomfort in the armpit, as well as the possibility of cancer, patients need to consult a doctor for treatment in a timely manner. There are many other causes of axillary bulge, it is recommended that patients actively seek medical treatment to clarify the cause of the disease for standardized treatment.