Causes: 1, emotional and other mental factors 2, overwork 3, inhibit breastfeeding 4, bad habits and diet 5, lack of trace elements needed for the breast 6, long-term use of hormonal drugs Performance: 1, breast lumps: palpable lumps non-palpable lumps (need ultrasound to detect) 2, fluid overflow from the nipple: can be milk-like, can be bloody or pale yellow performance of these two aspects Can be asymptomatic, often found when unintentionally touching the breast or changing underwear. Treatment: 1.Hormone therapy. 2.Chinese herbal therapy Mainly to activate blood circulation, eliminate blood stasis, relieve swelling and pain, and soften hardness and disperse nodules. 3.Surgical therapy After the formation of solid masses and fibroids over 2cm in size, surgical treatment is usually required.