Mammary gland hyperplasia is the most common and highly prevalent disease among women of childbearing age between 25 and 40 years old, and the proportion of patients with hyperplasia in breast clinics reaches more than 90%. The clinical manifestation is cyclic breast pain, which is more severe before the physiological cycle and relieves or disappears after the cycle. Women who are older and unmarried, who have never had children or breastfed, and who are depressed are most likely to have this disease. During a woman’s life, her breasts are like a tree that starts to develop from a budding state, matures from adolescence, and only after pregnancy does it really “flourish”, which is a natural process. During this process, estrogen stimulates breast development, while progesterone plays a protective role. Therefore, women who have never given birth to a child and do not breastfeed their children are prone to breast problems because they are not protected by progesterone. The high incidence of breast cancer is between the ages of 45 and 55. Although there is a trend of younger age, it is still rare for women in their twenties to get breast cancer, so young women do not need to be too nervous. However, women with family history of breast cancer and endocrine disorders (including obesity, diabetes and hypertension) should be very careful. Women who have never had children, started menstruation earlier than 12 years old or menopause later than 52 years old, late marriage, less childbearing, age of first birth older than 35 years old and short breastfeeding time are the high incidence of breast cancer. The incidence rate in large cities is significantly higher than that in small towns and rural areas. Therefore, doctors remind that in order to avoid breast enlargement, it is better to complete the life event of marriage and childbirth before the age of 35. In addition, do not breastfeed for less than a year after giving birth. The mood should always be cheerful, not sulking, too anxious and irritable, because the biggest cause of breast disease is mental factors. If you already have breast disease, emotional regulation is the first priority. Every adult woman should learn to do daily self-examination of her breast After the age of 30, every woman should learn to examine her breast by herself. The method of self-examination is to take a supine position lying flat on your back and press your breasts clockwise with your fingertips, but do not take a grasping position, lest you treat even normal breast tissue as hyperplasia. If you feel any scattered granular objects you should seek medical attention and ask your doctor to help make a final judgment. It is important to eat less high-fat, high-protein, low-fiber foods, as well as less smoking and alcohol, and less spicy and stimulating foods. Eat more cabbage, seaweed and soy products. Usually you should wear underwear with steel support and good support. Inappropriate underwear can also affect the health of your breasts. Also, you should have a breast examination once a year, such as breast X-ray or ultrasound. Women over the age of 40 need to increase the number of mammograms every one to two years to look for signs of malignant tumors.