There is no specific benefit to stimulating the breasts during menstruation. Many women experience discomfort such as breast swelling and pain during menstruation. Breast swelling and pain that occurs during menstruation, it is a normal physiological phenomenon, mostly occurs 7-14 days before menstruation, breast swelling or nipple swelling and pain, including nipple sensitivity increases and tenderness is obvious. After menstruation, it will return to normal, usually due to changes in the body’s endocrine environment, before menstruation, increased levels of estrogen will stimulate the proliferation of breast lobules, causing localized transient edema and swelling of the breast, manifested as breast swelling and pain, increased nipple sensitivity and other problems, and is closely related to the cycle of menstruation. There is also premenstrual tension syndrome, which is also affected by the nervous system and can be characterized by a variety of physical discomforts, including breast swelling and pain, which is usually a normal physiological phenomenon. There is no particular benefit to stimulating the breasts at this time. And patients with breast hyperplasia and breast nodules are not suitable for breast stimulation.