The season has a significant impact on the development of height generally in the spring, March, April, May is the most rapid growth of young children in these three months, the increase in height of young children is equal to 2-2.5 times the height increase of young children in September-November 3 months. During this period, if young children participate in more outdoor sports, strengthen exercise, pay attention to nutrition, the growth and development of young children more favorable. The influence of physical exercise on the height of young children reasonable physical exercise is an important means to promote bone growth, arrangements for young children to participate in physical exercise, must strictly comply with the health principles of physical exercise. In the selection of sports, exercise and exercise load arrangements, must be in line with the characteristics of height development and age characteristics of young children. The bones of young children have poor function of bearing pressure, and the bones are prone to bending and deformation. To prevent the deformation of their spine, chest, pelvis and lower limb bones, attention should be paid to the development of correct body posture in daily learning and life, pay attention to the cultivation of their correct posture of standing, running, jumping and throwing; for asymmetrical items (such as table tennis, badminton, throwing, high jump, long jump, etc.), special attention should be paid to strengthening the exercise of the opposite limb; it is not advisable to repeatedly perform jumping exercises on hard ground to avoid premature lower limb bone It is not advisable to repeatedly perform jumping exercises on hard ground to avoid premature ossification of lower limb bones or causing damage to epiphyseal cartilage, thus affecting the normal growth and development of bones and height growth, and to avoid excessive jumping exercises from high places to prevent the developmental deformation of pelvis and lower limb bones; it is not advisable to perform strength exercises too early, if the weight of exercises is too heavy, too long and too many times, it will not only affect the normal development of lower limb bones, but also deform the legs and lower the arch of the feet (flat feet).