Stage IIA breast cancer usually requires surgical resection and postoperative adjuvant treatments such as radiotherapy and targeted drug therapy to control the disease. Stage IIA breast cancer strictly belongs to the stage of transition from early to middle stage, and these patients usually need radical surgical resection and certain stages of postoperative adjuvant treatments, such as radiotherapy and targeted drug therapy, to help control the patient’s disease process. Targeted drugs commonly used in breast cancer clinics mainly include trastuzumab, patuximab, etc. These drugs are mainly used for HER2 gene-positive patients. It should be noted that the drugs for targeted therapy must be used under the guidance of doctors and in accordance with their instructions, and patients cannot use the drugs without authorization, nor can they change the dosage and method of using the drugs arbitrarily, so as not to cause discomfort or affect the therapeutic effect. Patients with stage IIA breast cancer usually do not have distal spread of cancer cells, but there may be metastasis of cancer cells in axillary lymph nodes, which usually requires excision of breast tissues or lymph node dissection surgery for treatment. The earlier the breast cancer is treated, the better the result will be. It is recommended that patients go to regular hospitals for consultation and timely treatment.