The main consideration for breast pain is the following: First, it may be a non-menopausal woman, in each menstrual cycle estrogen levels will continue to change, when in the premenstrual and menstrual period is the body’s estrogen levels reach relatively high levels, in the hormonal stimulation of the mammary glands will also change, hyperplasia resulting in pain, no treatment is needed, after the end of the menstrual period will be relieved. The mastitis is caused by the failure to breastfeed in a timely manner or the failure to discharge excess milk from the mammary glands, or the failure to clean the nipples in a timely manner resulting in retrograde infection of the nipples with bacteria leading upwards to the mammary glands. The mastitis is caused by local pressure on the nerves due to breast lumps or breast tumors.