”According to a study by the World Health Organization, children grow the fastest in spring, especially in May, when they can grow 7.3mm taller, and the slowest in October, when they grow only 3.3mm. The reason why spring is good for growth is mainly related to the following All factors related to the mechanism: 1, the spring light in the ultraviolet content is so the highest in the season. Ultraviolet light not only has a good sterilization effect, but also can stimulate bone marrow proliferation, so that the red blood cells increase, which is conducive to the body to carry oxygen and accelerate the metabolism of the tissue. Vitamin D in food and vitamin D in human skin tissue can only be absorbed by the body after UV light exposure into vitamin D3, which is then converted into biologically active hydroxylated vitamin D in the liver and kidneys, the latter of which can promote the absorption of calcium and phosphorus in the gastrointestinal tract and provide sufficient calcium and phosphorus for the growth and development of bones. 2, spring outdoor activities can promote human metabolism, accelerate blood circulation, improve respiratory and digestive functions, regulate the secretion of endocrine hormones, such as the increase in secretion of growth hormone, especially conducive to growth. 3, various vegetables and fruits in spring contain protein, vitamins and trace elements such as calcium, phosphorus and iron, which are necessary for human body to grow taller. Therefore, in order for children to seize the golden season of growth, the key lies in the parents’ concept of care and awareness.