Sleep and nutrition play an important role in the growth and development of children. Growth is a sensitive indicator of a child’s health status, nutrition and genetic background, and deviations in height and height growth rates from the normal range may indicate some underlying congenital or acquired disease. The national pediatric endocrinologists have found that many parents have misconceptions in this regard, either they are not aware of the many aspects of their children’s growth and development that need to be taken into account and leave it to chance, or they find out that their children are short and rush to the doctor. It is because both boys and girls, at the age of 4, their body growth hormone and thyroid hormone have basically formed, diet and sleep habits are gradually formed, and it can be seen from the figure whether there are defects, these conditions play a decisive role in the future growth and development. The secretion of growth hormone has a certain pattern, and the human body’s peak is during nighttime sleep. Generally, the first peak of growth hormone secretion occurs one hour after children fall asleep and enter deep sleep. Children should sleep for more than 9 hours a day, so that the growth hormone in their bodies will be fully secreted, forming a virtuous cycle, which is the reason why the folklore says that “children grow meat when they sleep”. At around 4 years old, it is still a critical time for children’s brain development, so let them exercise more and do what they can to develop their intellect, so that their minds are in an active stage, which will also promote endocrine, beneficial to growth. Before the age of 2, infants and toddlers are 6~7 cm shorter than children of the same age, and after the age of 2, they are 5 cm shorter than other children, and parents should take their children to the hospital for examination. The slow growth of children in early childhood is very often caused by parents’ improper feeding and failure to develop good eating habits for their children. There are several types of growth retardation in children, including attenuated, temporary stagnation, and delayed onset of growth phase in children. Attenuated growth usually has an organic lesion. Temporary stagnation, on the other hand, is a certain period of retardation, but the growth rate after that is normal. Delayed childhood growth phase is when a child does not exhibit the characteristics of childhood growth after the high growth rate of infancy. The latter two cases of non-growth, or slow growth are usually caused by improper parental feeding, or by the child’s picky or partial eating. For example, some parents rely excessively on breast milk or formula, do not pay attention to the development of the child’s dental chewing ability, 10 months still do not add supplementary food, or only eat porridge noodles, etc.. Such a diet, nutritional intake is certainly insufficient, resulting in insufficient secretion of growth hormone, affecting the growth of children. Parents should not take such a situation lightly, thinking that the child will naturally eat and grow, because, in the process of growth and development of children, in the future, even if the correction of poor dietary habits, the secretion of growth hormone is sufficient, but the growth opportunities missed, often can not be made up. Therefore, adequate sleep and scientific feeding is very important for the growth and development of children.