There are two causes of mild breast tenderness, physiologic and pathologic. Pathologic common diseases are breast hyperplasia, breast cancer, mastitis and other diseases in the lobular area of the breast, etc. These diseases will cause irregular slight swelling and pain in the breast at the initial stage of the disease. Physiologic mild breast pain, which is common after childbirth, before menstruation, or after sexual intercourse, is caused by hormonal stimulation. The diagnosis can be confirmed by mammogram, ultrasound or infrared examination of the breasts. Minor breast diseases can be treated with medication and physical methods, while tumors can be surgically removed and then treated with chemotherapy or radiotherapy. Diseases in the breast area have a certain relationship with personal emotions and living habits, you should pay attention to emotional stability, maintain a good mood, and wear underwear correctly.