Healthy lifestyle, population-based screening mammography and modern medical-oncological treatment in specialized breast cancer centers are the basic elements of the fight against breast cancer mortality. Treatment plan for the individual patient should be recommended by multidisciplinary oncoteam before initiating definitive therapy. Strategy of the medical-oncological therapy of breast cancer is determined by the biological features and stage of the tumor. The most important biological features are endocrine sensitivity, Human Epidermal Growth Factor Receptor 2 status and proliferative capability of the tumor. In this review the strategy of medical-oncological treatment (chemotherapy, endocrine therapy, targeted biological therapy) of breast cancer is presented, based on receptor status and proliferative capability of the tumor in various stages of the disease.