Breast axillary lymph node pain is a relatively common symptom in clinical practice, the main reasons include the following aspects: First, simple axillary lymph node inflammation and mammary gland does not have much to do with the majority of the body’s immune system or sleep is not good to cause simple inflammation, through anti-inflammatory symptomatic treatment or hot compresses, the breast axillary lymph node pain will be significantly relieved. Second, due to mastitis or acute breast abscess leads to local or regional axillary lymph node reactive hyperplasia, through the breast abscess or inflammation for thorough treatment, or after surgery lymph node pain phenomenon will be gradually relieved. Third, due to breast malignant tumors resulting in axillary lymph node metastatic pain, should pay attention to, if necessary, can do breast MRI, or axillary lymph node puncture biopsy to further clarify the diagnosis.