There are three main reasons why sleep is important in early pediatric development, especially in infancy: first, sleep is an important physiological process, as many hormones, especially growth hormone, are secreted after sleep, sleep also promotes maturation of the central nervous system, immune and digestive function, and so on; in addition, sleep has an important role in repairing and rehabilitating brain maturation deficits and brain injury; in addition, some sleep In addition, some sleep abnormalities often suggest the possibility of immature brain development or injury, or may be early manifestations or precursors of future abnormal brain development, which also suggest the need for and possibility of early intervention. Therefore, it is important to pay attention to sleep and ensure the quality of sleep for your little one! First, the basic total amount of daily sleep at different ages 1, newborns (~ 28 days): 18-20 hours 2, 2-4 months: 16-18 hours 3, 5-9 months: 15-16 hours 4, 1 year: 14-15 hours 5, 2-3 years: 12-13 hours 6, 4-5 years: 11-12 hours 7, 7-13 years: 9-10 hours Second, the normal time to fall asleep, go to bed can be in 10~20 minutes to fall asleep, without excessive reliance on objects and/or company to fall asleep. 3.Fall asleep before 9~10pm. Fourth, sleep without waking up or occasionally wake up (such as urination) and can quickly fall asleep in 5 minutes, and sleep for more than 2 hours for the first time in the night until the next morning. Deep sleep, not easy to wake up during sleep, less wake up (less than 2 times before 1 year old). V. No obvious and frequent crying, twitching and dancing of hands and feet, aimless getting up and walking during sleep: no or few nightmares, abnormal behavior during sleep, etc. VI. No discomfort after natural awakening, very good spirit after getting up in the morning, no sleepiness, clear mind, quick thinking and high efficiency in daytime work and study.