1.Keeping your mood relaxed and emotionally optimistic is the best defense weapon against breast enlargement. 2.Women aged 16-50 should have regular breast screening. the 3rd-7th day after menstruation is the best time for examination, which can be done through self-examination, palpation, molybdenum palladium, etc. Women over 35 should have it done once every 1-2 years; women over 50 should have it done once a year; high-risk groups (family history of breast disease, ovarian cancer, glandular cancer), women with severe hyperplasia should have it done once every six months for Women aged 20-35 should undergo infrared or breast surgery examination once every three years. 3. Reduce the number of abortions to reduce the probability of mastopexy. 4, regular life, appropriate exercise. You should combine work and rest, get enough sleep, and stay up late; appropriate running, chest expansion and other exercises that can enhance breast health. 5, breastfeeding time should be sufficient. Women who do not breastfeed or breastfeed for less than 8 months after giving birth will cause milk stagnation and raise the probability of breast disease. 6, avoid the use of hormonal drugs and beauty products. 7, it is best not to wear too tight or squeeze the effect of breast augmentation bra, which affects the metabolism and lymphatic return of the breast, resulting in breast enlargement. 8, reduce the high energy supplements and food. Eat a light diet, eat more green leafy vegetables and fresh fruits, and do not take propolis, royal jelly, pollen and some oral liquids containing hormones on your own without medical advice, especially for women in menopause, and do not use these supplements to change the status quo of declining estrogen levels.