Prevent the occurrence of breast hyperplasia should pay attention to the following aspects: (1) maintain emotional stability, open-minded and cheerful, avoid adverse mental stimulation, regularity, work and rest. (2) low-fat high-fiber diet principle. Eat more whole grains, beans and vegetables, increase the body’s metabolic pathway, reduce the mammary gland by the adverse stimuli. Also, control the intake of animal protein, so as to avoid excessive estrogen, resulting in breast enlargement. (3) Keep your sex life normal, regular and harmonious. Sexual reaction cycle is a kind of regulation of mammary gland function, just like giving birth and nursing. If there is a lack of regulation of this physiological process, the endocrine system is easy to be out of order and the mammary glands will be continuously congested and swollen, which will lead to the occurrence of mammary gland hyperplasia. Harmonious sex life can firstly regulate the endocrine system, stimulate the secretion of progesterone, and increase the protection and repair of the mammary glands. In addition, orgasmic stimulation can also accelerate blood circulation, to avoid breast hyperplasia due to poor blood circulation. (4) Marry at the right time, do not give birth too late, and strive for breastfeeding after delivery. (5) Timely treatment of chronic inflammation of the uterus and adnexa and gynecological disorders such as menstrual disorders. Do a good job of contraception and avoid multiple abortions. (6) Avoid the intake of exogenous estrogen and be careful in taking drugs and foods that may cause endogenous hormone disorders, and treat the primary diseases that may cause endogenous hormone disorders.