The most common cause of swollen lymph nodes in the armpit is a local or surrounding soft tissue bacterial infection, usually accompanied by pain, which can be treated with antibiotics to fight infection. In addition, you can also apply Chinese medicine to clear heat and detoxify and soften and disperse nodes, the most commonly used is Qingkailing Oral Liquid, Pu Di Lan Anti-inflammatory Tablets or apply Niuhuang Detoxification Tablets and Xiao Jin Wan, among which Xiao Jin Wan has the effect of softening and dispersing nodes, as well as activating blood circulation and resolving blood stasis, which also has a good effect on primary lymph node enlargement, but if the axillary lymph nodes are enlarged due to malignant tumor metastasis, eating However, if the axillary lymph nodes are enlarged due to metastasis of malignant tumor, taking the medicine cannot relieve the symptoms, and the primary tumor must be treated and then combined with radiotherapy and chemotherapy to relieve the enlarged lymph nodes.