Most drinks contain sugar, for example, carbonated drinks contain very high sugar content, and children who often drink such drinks are prone to tooth decay, which may lead to short stature, i.e., delayed growth and development, and also lead to a series of problems such as obesity. The best drink for children is plain water. The Chinese dietary guidelines for children and adolescents also point out that children should drink enough water and drink less or no sugary drinks. For children, the Chinese dietary guidelines for children and adolescents recommend that the amount of water for children should be 800ml/d for 6 year olds, about 1000m/dl for 7-10 year olds, and basically 1100-1400ml/d for 11 year olds and above, i.e. such an amount for adolescents. When drinking water, we should pay attention to drink a small number of times, not too much at once, about once drink 200ml of such an amount. In summer, for example, when sweating, you can increase the amount of drinking water.