Stage II breast cancer is usually treated with relatively satisfactory results. Although her2 is positive, targeted drugs are available, so it is not difficult to treat. Stage II breast cancer is in the middle stage and early stage, at this time, it can still be radical resection through surgery, and adjuvant chemotherapy can be given after surgery. her2 type can be given after surgery to inhibit the growth of the tumor, which has already made the survival period of her2-positive breast cancer patients reach the level of her2-negative patients, and there are more chances of treatment. Breast cancer is a very common tumor disease, although the incidence rate is high, but the prognosis is good, early detection and early treatment survival is very long, even in the middle and late stages can also be extended through relevant treatments to extend the survival time of patients. Even in the middle and advanced stages, the survival time of patients can be prolonged through relevant treatments. Of course, after the operation, regular follow-up observation is also necessary to prevent recurrence and metastasis.