Both sides of the breast swelling pain causes more, need to be accurately diagnosed, as follows: 1, habits: women overwork, fatigue, late night, irregular life, triggering endocrine disorders, which in turn produces both sides of the breast swelling and pain; 2, mental: if the female mental stress, work pressure, excessive tension, anxiety, or even depression and other bad moods, can be triggered by endocrine disorders, resulting in swelling and pain in the breasts; 3, the menstrual period: Before a woman’s menstrual period, estrogen and progesterone fluctuate greatly, resulting in estrogen and progesterone target organs, i.e., breasts, mammary glands, swelling and pain; 4, breast disease: such as mastitis, breast hyperplasia, breast cystic degeneration and other mammary gland diseases, will make the female breast swelling and pain.