Breast cancer axillary lymph node metastasis is still more serious. Underarm lymph node metastasis of breast cancer will appear localized lymph node enlargement and pain, which often suggests that the malignant cells have developed lymph node metastasis, and if surgical excision + lymph node dissection treatment cannot completely remove the diseased tissues, the recurrence rate and mortality rate of the disease are relatively high. It is recommended to make a comprehensive judgment based on the results of pathological examination and immunohistochemistry results after surgery to formulate an appropriate adjuvant treatment plan. Patients with breast cancer must go to the breast surgery department of the hospital as soon as possible, and improve CT, MRI and other related imaging examinations before surgical treatment to clarify the analysis of the disease. Clinicians will take into account the specific condition of the patient and formulate a treatment plan to prolong the patient’s survival time as much as possible.