Prevention of mammary gland hyperplasia should start from many aspects. 1 Keep a good mood, be less angry and lose your temper. Emotional instability will inhibit ovulation function of ovary, decrease progesterone and increase estrogen, which will lead to hyperplasia of mammary glands. 2. Stay away from radiation. Eat less spicy food and do more exercise. 3. Take and use less foods, medicines and cosmetics containing hormones. Breastfeeding and childbirth are good for these, so it is better to give birth and breastfeed at an appropriate age. The biggest cause of mammary gland hyperplasia is endocrine disorder, so we should pay attention to this aspect, including seeing a doctor as soon as possible if there are some gynecological diseases such as irregular menstruation. Avoid long-term endocrine disorders. If you find that you have breast hyperplasia, you should treat it as soon as possible to avoid the deterioration of your condition.