Both sides of the breast a touch of pain may be caused by the following situations: 1, during breastfeeding due to milk is not timely emptied, there is a stagnation blocked the mammary gland ducts, the formation of hard lumps or mastitis, fever, redness, swelling, touch pain, stagnation of the longer, the stronger the pain; 2, not during breastfeeding to consider suffering from mammary diseases, such as mammary gland hyperplasia, the appearance of the breast inside the lump, the breast around the pain and other symptoms, and by the physiological period of influence before the menstrual period is particularly strong, the pain will gradually reduce after the onset of menstruation. And by the influence of physiological period, soon before menstruation, the pain is particularly strong, after menstruation, the pain will gradually reduce; 3, breast cancer, no symptoms in the early stage, to the late stage when there is a hard lump in the breast, touching the more intense pain; 4, breast fibroid, mastitis and other diseases caused by the best to go to the hospital to do a comprehensive examination.