Newborns who do not pass the heel blood test are asked to have their blood recollected as soon as possible at the nearest hospital for review. This is because the diseases covered by the newborn screening have serious effects on children, such as congenital hypothyroidism, which affects the growth and development of children as well as causing intellectual disabilities. If not diagnosed and treated in a timely manner, the child will only be half the height of a normal child, and his intelligence will not be able to reach the level of school enrollment, so he will not be able to take care of himself and will not be able to go to school. Such as phenylketonuria, will also cause intellectual harm to children, but glucose-6-phosphate dehydrogenase deficiency, often referred to as serotonin, usually seem to have no symptoms, feel as if the problem is not big, but as a newborn’s guardian, do not be sloppy, must be diagnosed in a timely manner. When a child knows that he or she is serotonin, certain precautions should be taken to avoid causing acute hemolytic anemia.