Breast is an important symbol of a woman’s health and beauty. Breast cancer often affects the shape of the breast and even threatens the life of the patient. In recent years, the incidence rate of breast cancer is gradually increasing, and the age of onset is getting younger and younger. The incidence rate of breast cancer has nearly quadrupled compared to 30 years ago. The reasons for this are many and varied, such as environmental pollution, food pollution, work pressure, reduced fertility and breastfeeding, etc., all of which are related to the increased incidence of breast cancer. As the saying goes, talking about cancer is a bolt from the blue, and it will feel like a bolt from the blue when it happens to anyone. As an ordinary person, the first thing to do is to realize that breast cancer is preventable and treatable. Although the causes are complex, there are still rules to follow. First of all, it is not advisable to delay the age of childbirth excessively and try to breastfeed. Try not to use birth control pills to reduce the adverse stimulation to the breast. Eat less meat products, especially pickled products. Eat more fruits and vegetables. Take physical exercise, relieve work pressure, ensure reasonable sleep time and reduce late nights. Regular breast examination, either ultrasound or mammogram, if a lump or suspicious nodule is found, it should be removed or followed up closely according to the doctor’s opinion. For people with family history, they should be more alert because breast cancer has a certain family aggregation.