Sometimes a little pain in the breast is related to breast hyperplasia, mastitis, breast cancer and other factors. The pain of intermittent pain in the breast is generally considered to be caused by breast enlargement. The pain of breast enlargement is generally regular, and the symptoms of pain will be more obvious before menstruation, which is caused by the pain caused by the increase of hormone level in the body, which stimulates the interstitium of the breast lobule and the breast follicle to proliferate, and the pain will be relieved by itself when the hormone level is reduced after the menstruation. Breastfeeding mastitis is also prone to intermittent pain, especially in the early stages of mastitis, when symptoms are less obvious, and tingling in the area of the lump is caused by wearing clothes or touching it. In the early stages of breast cancer, chest pain and lumps are not easily detected, and as the disease worsens, it is easy to experience intermittent pain. Localized pain should be alerted, and the diagnosis can be confirmed by timely color ultrasound examination at the Breast Surgery Department of the hospital.