Appropriate sugar intake is not particularly harmful to the human body, but excessive sugar consumption can easily affect make children obese, tooth decay, affect growth and development. 1. Obesity: children who continue to consume sugary drinks or other excessive sugar every day gain more weight than those who don’t drink, and this habit continues to make children obese. 2. Tooth decay: Children who eat a lot of sugar are more likely to develop tooth decay than those who do not. Eating too much sugar is easy to produce acid on the surface of the teeth, resulting in damage to the enamel, affecting the health of the teeth and producing tooth decay. 3. Impact on growth and development: excessive sugar can damage cell metabolism, reduce the ability to synthesize vitamin D, reduce the intestinal absorption of calcium, affecting the development of children’s bones and the secretion of growth hormone, resulting in a reduction of growth hormone in the serum of the body. Parents should pay attention to limiting children’s consumption of high sugar foods, eat more fresh fruits and vegetables, and ensure a balanced diet.