Newborn babies in the perinatal period because of asphyxia causes brain hypoxia, followed by ischemic damage to brain tissue, will seriously affect the later development, there are mild,,, moderate and severe hypoxia. 1, mild cerebral hypoxia, there will be excessive excitement, when the body will be trembling or tremor, decreased muscle tone or increased muscle tone, can be three days after the normal recovery, basically nothing big problem. 2, moderate cerebral hypoxia, there will be drowsiness, and some children will have convulsive seizures, pause breathing or parents hug when there is little response, giving the feeling that there is little physical strength, almost the symptoms can last a week to two weeks, may leave sequelae. 3, severe cerebral hypoxia, the child is in a coma, muscle flaccidity, basic reflexes are not common, pupil dilation is not the same, low sensitivity to light, and irregular breathing, regular alertness, severe respiratory failure will occur, which will lead to the appearance of death, and those who survive will also have sequelae. Doctors perform basic tests after birth, and lower scores indicate that the child is abnormal. Each child has different symptoms, it is still important to find abnormalities early to the hospital.