Targeted therapy for breast cancer includes single drug and combined drug. 1. Single drug, that is, only using targeted drugs for treatment, the more commonly used drugs in the clinic are Lapatinib, Pertuzumab, etc., which can directly act on the tumor tissues to shrink the tumor and inhibit the replication of the cancer cells, so as to stabilize the patient’s condition. 2. Combined use of drugs, while using targeted drugs, radiotherapy, chemotherapy and other treatments can help to enhance the therapeutic effect, and the overall therapeutic effect is outstanding, which can effectively prolong the survival cycle of patients. The above drugs need to be taken under doctor’s guidance, and adverse reactions such as skin rash and regurgitation may occur during the use of drugs, and not all breast cancers are suitable for targeted therapy. Not all breast cancer patients are suitable for targeted therapy. Therefore, breast cancer patients should follow the doctor’s guidance and choose the appropriate treatment plan according to their specific conditions.