Women can have a self-touch examination at 2 to 3 days after each menstrual period. Women under 35 years of age should have regular high-frequency ultrasound examinations, while women over 35 years of age should have a mammogram. For the frequency of examination, women over 35 years old should have at least once a year. In daily life, breast health care should be done 1. Exercise more and maintain normal weight: obesity is a high risk factor for breast cancer. The intake of high-fat and high-calorie food, especially fried food, should be reduced as much as possible. The normal body mass index is 18.5 to 25, too low or too high is not good. The formula for calculating body mass index is: weight (kg) divided by the square of height. 2, careful use of hormonal drugs: taking hormonal drugs can lead to endocrine disruption, which increases the risk of cancer in breast disease. 3.Maintain a good state of mind: optimistic and relaxed 4.Go with the flow of motherhood: survey shows that: the rate of breast cancer patients with low sexual function, unmarried at advanced age, primiparous at advanced age and widowed is significantly higher than other groups because it is difficult to maintain normal hormone levels in these groups. 5.Wear appropriate bras that are beautiful and comfortable and healthy. 6.Eat more food of plant origin. Eat more vegetables and fruits, it is recommended to eat 5 kinds of vegetables and fruits every day, that is, a pound of vegetables and fruits, containing 8 two vegetables and 2 two fruits. 7, drink less alcoholic beverages.