The newborn child must cry, mainly to promote normal breathing of the lungs and exclude foreign bodies. 1. Promote normal lung breathing: fetal period, in the mother’s womb is living in the amniotic fluid inside, mainly through the umbilical cord for breathing, after birth need to rely on independent breathing inhalation of oxygen, discharge carbon dioxide, therefore, the need for the baby to cry out after the air into the lungs, so that alveoli completely open, began to breathe normally. 2. Excluding foreign bodies: newborns are likely to have a large number of foreign bodies in their mouths, usually amniotic fluid, crying after birth, will cough up the foreign bodies inside the throat. Newborn children crying is a normal phenomenon, do not need special treatment, if the child did not make a cry, often the doctor will stimulate the child to cry.