The neonate’s cerebral cortex is not well developed and its cortical excitability is low, so its sleep time is long, about 16-20 hours per day on average. The cortical excitability of newborns is low, and external stimuli are too strong for newborns, so they are easily fatigued to fall asleep, and their circadian rhythm is not fully established. In addition to normal milk and bowel movements awake, the vast majority of the time are sleeping, only sufficient sleep to ensure the development and maturity of the tissues and organs. As babies grow and develop, sleep time can be gradually shortened, usually to about 16-18 hours after 3 months of age. In addition, if a newborn baby cannot go to sleep after feeding or wakes up frequently, it is necessary to observe whether there is any abnormality, exclude insufficient feeding, insufficient milk, etc., and monitor its height and weight development to ensure the healthy growth of the baby.