Some parents think their children are just developing later than their peers, but overlook the fact that this may be a symptom of brain damage. So what can we do in life to prevent this torment? The hug reflex is an intrinsic reflex of the spinal cord and is an unconditioned reflex. If the hug reflex is lacking, it means that the child’s nervous system is not mature, and there may be damage or lesions in the nervous system, intracranial hemorrhage or other intracranial diseases. The reflex will gradually disappear with the development of the higher centers of the cerebral cortex. Prevention of brain injury focuses on early detection, early intervention and early treatment. If the best correction period is missed, it can have irreversible effects on the child’s life. Generally speaking, children treated within 6 months after birth have the best results, and some children’s intelligence can even recover to the level of normal children, because the baby’s brain tissue develops fastest before 6 months and is easy to recover. Therefore, it is best to have a formal checkup every month until the age of half a year.