The prevention of breast tumors can be generally divided into primary, secondary and tertiary. Primary prevention —– is to target a certain cause of tumor and take targeted measures to prevent the cause from acting on human body. However, breast tumor is a slow and long-term process, and the cause of the disease is not clear at present. Therefore, primary prevention is more difficult. Secondary prevention —- is to take different measures to detect tumor as early as possible, that is, when the tumor is in pre-clinical or sub-clinical stage, to find it out and diagnose it in time and treat it in time to stop its development. This is also known as secondary prevention, i.e. “three early” early detection, early diagnosis and early treatment, which can achieve cure or prolong the survival period of patients. Tertiary prevention mainly focuses on factors related to the development of breast cancer, such as diet and nutrition, lifestyle, marriage, childbirth, breastfeeding, etc. The four major factors are as follows: 1. Some studies have reported that the risk of menarche is 2.2 times higher for those who have menarche earlier than 13 years old than for those who have menarche older than 17 years old; the risk of menarche is about 1 times higher for those who have menarche older than 55 years old than for those who have menarche younger than 45 years old. The incidence of breast cancer is significantly higher in women who are celibate, unmarried, unpregnant or with their first child older than 30 years old than in women who are normally married and have children. Women who give birth but do not breastfeed, or who breastfeed for a short period of time, or who breastfeed with only one breast, may also have an impact on the development of breast cancer. Therefore, proper breastfeeding after childbirth can keep the mammary glands open and have a preventive effect on the occurrence of breast cancer. If a woman rarely breastfeeds or never breastfeeds, the risk of breast cancer increases significantly. Sexual life The quality of sexual life between husband and wife directly affects the physical health of the breast. In recent years, the incidence of lobular hyperplasia and benign and malignant tumors of the breast has increased rapidly, which has attracted the attention of the medical profession. A special domestic survey found that 86% of women suffering from lobular hyperplasia of the breast never had an orgasm during sex. If women are always sexually excited but cannot reach orgasm, their bodies will feel extremely uncomfortable, and the unreleased sexual tension will easily turn into cramps and pain, which will over time produce psychological and pathological “depression” and lead to lesions of breast tissue. The conclusion of the study on the psychological characteristics of breast cancer patients also shows that the degree of depression and anger internalized by breast cancer patients is higher than that of healthy people. 4. Abortion Repeated abortions increase the likelihood of breast cancer in women. A study showed that spontaneous abortion does not increase the risk of breast cancer, while women who had an abortion before the age of 18 had a 110% higher risk than those who did not have an abortion. This is because after each abortion, the pregnancy is abruptly interrupted and the hormone level in the body suddenly drops, causing the newly developed mammary glands to suddenly stop growing, making the alveoli smaller or disappearing, and the mammary glands to recover. This recovery is usually incomplete and can easily cause breast lumps and pain, which can lead to breast diseases and repeated breast lesions can become a cause of breast cancer. Therefore, modern women should raise their awareness of self-care and advocate late marriage and late childbirth, but not too late, it is better for women to get married before the age of 28. It is important to promote a scientific lifestyle such as breastfeeding, reasonable diet and strengthening physical exercise, and pay attention to keeping an open mind, avoiding depression and anger, and maintaining good physical and mental health. It is important to pay attention to proper sports and exercise, and keep the body shape not to get fat, so as to improve the protective factors of the body these are essential for prevention to reduce the incidence of breast cancer. Secondary prevention is the timely examination and treatment of breast diseases. If you find any abnormal lump in your breast, you should ask your doctor to examine it in time. 2. To do a good job in secondary prevention, women must know some general knowledge about breast cancer prevention. Once a lump is found in the breast, it is necessary to seek medical consultation in time. 3, usually, in daily life, we hope that women will choose to wear bras with prevention of breast diseases and learn to master the techniques of qi and blood regulation, meridians and two-way prevention and treatment of breast diseases. Tertiary prevention i.e. rehabilitation prevention: most of the breast cancers found are in the middle and late stages and most of them have undergone radical surgery. Tertiary prevention is to prevent recurrence and metastasis of cancer. At present, in addition to endocrine therapy, chemotherapy and radiotherapy, there are also targeted therapies however they are currently expensive, all of which are used to consolidate the efficacy, promote health and prolong the survival period.