Breast cancer is one of the most prevalent cancers in the world, ranking second only to lung cancer. For the sake of women’s own health and the happiness of every family, we must pay attention to the prevention of breast cancer. 1.Actively treat benign diseases of breast: such as mastopathy, intraductal papilloma of breast, breast fibroadenoma. 2.Rational diet: eat vegetables and fruits, grains and cereals that are rich in fiber, or low in fat or animal protein; eat less sweets, or foods high in fat or animal protein. 3, do not treat abortion as a child’s play. 4.Take appropriate marriage and childbirth: do not be celibate, do not have children at an advanced age, have children and breastfeed. 5, do not smoke, do not drink alcohol, do not drink coffee. 6.Regulate your mood, be optimistic, avoid stress, and have a regular life and living. 7.Increase physical activity appropriately and avoid obesity: too much obesity will increase the production of estrogen in the body, which will induce breast cancer. Proper exercise can improve the immunity of the body and avoid obesity. 8. Be careful with hormonal drugs: Misuse or abuse of hormonal drugs can lead to endocrine disorders and increase the likelihood of breast cancer. 9. Do not take health products containing more estrogen: such as propolis, royal jelly, pollen, etc. 10.Unlock your breasts: women who wear bras for more than 12 hours a day are 21 times more likely to develop breast cancer than those who wear bras for a short period of time, and it is recommended to wear bras for no more than 8 hours a day. 11.Eat foods that can prevent breast cancer: such as kelp, groundnuts, corn, sour milk, milk, carrots, potatoes, tomatoes, celery, spinach, purple cabbage, soy products, etc. 12. Keep your bowels open and ensure that you have a bowel movement once a day. 13.Go to regular hospital mammography clinic for regular breast examination: generally women with a family history of breast enlargement disease and breast cancer should be examined every three months to six months, and normal people should be examined once a year. First, let the specialist do palpation examination, and if there is any problem, breast ultrasound wave or x-ray mammogram can be done. The doctor will decide which examination to choose according to the patient’s specific situation.