Abstract: Each woman of childbearing age has the right to enjoy reproduction, including cancer patients. Breast cancer is the most common malignant tumor in women. Many factors led to the significant increase of young patients with fertility problems, and the majority of doctors neglected their reproductive requirements in clinical work. Given the comprehensive treatment, almost every young patient suffers from fertility decline and even loss. Patients who chose to get pregnant also harbor a variety of concerns. This paper reviews the effects of comprehensive treatment on fertility, preservation strategies, pregnancy and prognosis, optimal time for pregnancy, and other aspects and provides guidance for young breast cancer patients in their reproduction choices.