There are many causes of pain under the breast, including the following: first, the most important and central consideration is due to hormone level disorders, such as the most common estrogen and progesterone secretion is too much. Secondly, it is considered to be caused by emotional changes, such as losing temper, sulking and moping. Thirdly, it may be caused by poor diet and repeated stimulation of foods with high hormone levels, such as fried chicken and yellow stuffed chicken. Fourth, the consideration is due to the underwear is too tight or stay up late to work overtime synthesized caused by, or to pay attention and attention, and as soon as possible after the assessment of the cause of treatment.