In China, breast cancer has become one of the most common malignant tumors in women. Although China is a low incidence country for breast cancer, there are obvious urban-rural differences in the incidence of breast cancer, and the high incidence areas are mainly concentrated in the large coastal cities. Especially in the past 20 years, the incidence rate of breast cancer among urban women has been increasing year by year. Statistics found that breast cancer has the following high-risk factors: i. Genetic factors. It has been found that women whose mothers had bilateral breast cancer before menopause have 9 times higher risk of breast cancer than the average woman, and the average age of breast cancer in the second generation of breast cancer patients is about 10 years earlier than the average person. The average age of the second generation of breast cancer patients is about 10 years earlier than that of the general population. Women who have sisters with breast cancer have three times the risk of the general population. It is important to emphasize that breast cancer is not directly inherited, but is a kind of “cancer quality” inheritance, and relatives of breast cancer patients do not necessarily have breast cancer, but are more likely to have breast cancer than the general population. Unhealthy lifestyle and eating habits. Some female white-collar workers who are engaged in office work for a long time sit more and move less, lack of exercise and less exposure to sunlight. Most professional women, due to their work, spend a lot of time with their bras tightly closed and rarely give their mammary glands “loose”; some professional women are forced to live a single noble or dinky life due to the pressure of work or the pursuit of career success, not having a family and not having children. Some company employees have a high standard of living due to their high income, resulting in an unscientific and unhealthy “high-calorie, high-fat” diet, which leads to a much higher incidence of breast cancer. High work pressure and mental depression. According to the survey, introversion, long-term depression and unhappy early life are important factors leading to cancer. Young urban women face fierce competitive pressure and their spirits are in a state of stress and tension for a long time, which leads to emotional instability and lack of peace. These mental factors together with bad life and work style cause further damage to breasts. Fourth, early menarche and late menopause. The relative risk of breast cancer increases 2.2 times when the age of menarche is less than 12 years old compared to more than 17 years old. The risk of breast cancer increases by 1 times for menopause at age 55 or older compared to age 45 or younger. Early menarche and late menopause are the two most important risk factors for breast cancer.