Girls in the development of the time will be due to the growth of breast nucleus and caused by the manifestation of chest pain, this is a normal phenomenon, do not need to be treated. If the child development chest pain symptoms are more obvious, can be given to the local hot compress treatment, can relieve the child pain symptoms, but try not to pinch, knead, easy to cause inflammation of the mammary gland symptoms. The development of the child’s breast pain is particularly obvious and hormone levels, in the diet as long as to do a balanced, reasonable diet, do not excessive intake of food containing estrogen-like effect is good, such as dairy products, soy products and honey products are containing estrogen-like effect is more food and fried foods, meats, snack foods, etc., containing estrogen-like effect of food may accelerate the child’s body estrogen level rises, the mammary gland is not as good as the child’s body estrogen. Estrogen levels rise, and when the mammary glands develop, it can aggravate the pain, so you can reduce your intake appropriately.