The treatment of swollen axillary lymph nodes may vary depending on the specific cause. There are many causes of swollen axillary lymph nodes, which can be divided into benign diseases and malignant diseases. For some benign diseases, such as acute mastitis, the main treatment is antibacterial and anti-inflammatory treatment. In the case of trauma or infection of the upper limbs, the same treatment of trauma and infection is the main treatment, and in the case of tuberculosis infection, anti-tuberculosis treatment should be administered promptly. The most common malignant disease that needs to be investigated is breast cancer. If breast cancer leads to lymph node metastasis, breast cancer related treatment, whether surgery, targeted therapy or chemotherapy, should be given in a timely manner.