Children’s growth rate is not the same throughout the year, the fastest growth is in the spring (about March to May), the slowest growth is in the winter. The winter is cold, children wear more clothes and have less opportunity to go out in the sun; while spring is the climax of the effectiveness of the growth and development of all things in nature, and humans, especially children, have the same effect. At this time, the function of the organs and cells in children’s bodies is very active, the secretion of growth hormones in the body increases, and growth and development is accelerated. In this process, sunlight and exercise are very critical factors. Sunshine. Sunlight is rich in infrared and ultraviolet rays, infrared rays can make blood vessels expand, promote blood circulation and stimulate bone marrow hematopoiesis; ultraviolet rays can kill bacteria in the skin and air, accelerate the synthesis of vitamin D3 in the body, improve the metabolism of calcium and phosphorus in the blood, promote children’s growth, and prevent anemia and rickets. Therefore, children should be given more time for outdoor activities to promote their growth and development. Exercise. An appropriate amount of outdoor aerobic exercise not only increases the stimulation of the epiphysis and accelerates the proliferation of bone cells, thus promoting the growth of bones. It also stimulates the pituitary gland to secrete sufficient amount of growth hormone to accelerate the child’s growth and development, prompting the child to grow taller. Children should choose sports with stretching and jumping, such as jumping rope, playing ball, swimming, dancing, etc. Strength-based sports that affect growth should be avoided, such as weight lifting, dumbbell lifting, and pulling machines. Combine sunlight and exercise. It is recommended to make 9:00 a.m. or 5:00 p.m. as the sunshine time of the day, and outdoor activities can be carried out during this time, preferably for about two hours. Ensure sufficient sleep. Generally, the younger the child, the more sleep required, in the adolescent development of children can not sleep less than 8 hours per night.