The causes of night terrors in infants are the following: 1, immature brain development, the nerve and brain development in infancy is not yet sound, the inhibitory part of the central nervous system, especially the immature development of the cerebral cortex that inhibits sleep arousal, has a certain impact on the baby’s sleep, which is a natural phenomenon of the baby’s development, this phenomenon will allow the child to sleep with night terrors, as the child’s brain development, this situation will gradually disappear. This is a natural phenomenon of baby development, this phenomenon will make the child appear night terrors at bedtime, as the child’s brain development, this situation will gradually disappear. 2, psychological factors, such as the child was reprimanded by parents during the day, listened to a horror story before bed or sleep in an unfamiliar environment, can make the child have a restless mood, so that night terrors will occur at night when sleeping. 3, pathological factors, the child serious calcium deficiency, inadequate supply of neurological brain nutrients, abnormal brain development, endocrine disorders and other pathological reasons can lead to the phenomenon of night terrors.