Swollen lymph nodes in the armpit are most commonly caused by bacterial infections in the soft tissues surrounding some of the lymph nodes, which induce swollen lymph nodes. The most common antibiotics are amoxicillin, cephalosporin or roxithromycin, clindamycin and other drugs. In addition, you can also apply quinolone antibiotics, the effect is also possible. In addition, combined with some Chinese patent medicines for clearing heat and detoxifying, for example, Niuhuang Detoxification Pill or Pientzehuang have the effect of clearing heat and detoxifying, reducing swelling and relieving pain. If the swelling of axillary lymph nodes is caused by some malignant tumor metastasis, it is useless to take ordinary medicine in this case, and the swelling can be relieved only through radiotherapy or chemotherapy after treating malignant tumor.