Mammary gland hyperplasia refers to the proliferation of breast epithelium and fibrous tissue, with cysts mainly formed by highly dilated breast lobules, small ducts and terminal ducts, and accompanied by pain, which is related to menstruation, aggravated before menstruation, and the cysts increase in size, alleviated after menstruation, and the cysts decrease in size. Prevalent in women aged 30-40, breast pain manifests as swelling and tingling, pain can involve one or both sides, untouchable in severe cases, and fluctuates with emotional changes. Physical examination: A mass, piece, nodule or granular mass of different sizes can be found in the breast with poorly defined surrounding tissues, but it does not adhere to the skin and pectoralis major muscle and can be pushed. Mammography: X-rays show round, oval or lobulated shadows of varying sizes with smooth, sharp edges and uniform density.Ultrasound: shows smooth, intact breast edges and slightly disorganized internal texture. The echogenic distribution is uneven, showing coarse light dots and spots as well as echogenic areas of varying sizes. The small ones are 0.5-2.0cm, while the large ones are up to 3-4cm. The mechanism of potatoes on breast enlargement: potatoes are flat, sweet, cold and less toxic, and have the effect of tonifying the middle and benefiting the qi, harmonizing the stomach and regulating the middle, clearing heat and detoxifying, and reducing swelling and beauty. In the West enjoy the “second bread”, “the second apple” reputation. Not only is it rich in nutritional value, it also contains a small amount of lobelia, which can relieve cramps in moderation and has the effect of activating the blood and reducing swelling. Mammary gland hyperplasia is non-inflammatory, non-tumorigenic and related to ovarian endocrine stimulation. The pain is related to the menstrual cycle and can be cyclical in nature. Potato topical treatment for mammary gland hyperplasia: 4d before each menstrual cycle, add potato topical treatment for mammary gland hyperplasia, 7d for 1 menstrual cycle, and so on for 3 menstrual cycles. It was observed that the patients’ pain was significantly reduced on the 3rd day of the 1st menstrual cycle, the pain was reduced and the duration of pain was significantly shortened in the 2nd menstrual cycle, and most of them had no pain in the 3rd menstrual cycle, and continued consolidation treatment was still taken to prevent recurrence. Adherence to this approach can lead to the early reduction or disappearance of breast pain and the shrinking or disappearance of lumps. Huang Ying’s research shows that the addition of potatoes to conventional treatment for breast enlargement has no side effects and is easily accepted by patients, which not only shortens the course of treatment and improves the cure rate, but also reduces the waste of medical resources and is economically convenient and practical.