In addition to myopia due to congenital genetics, acquired near vision load, social and environmental factors, it is also related to the lack of trace elements in the body, especially calcium and zinc deficiency. Data show that a diet high in sugar and protein can promote the onset and development of myopia. Recent studies have shown that myopia is not only due to congenital genetics, acquired visual load, social and environmental factors, but also to the lack of micronutrients in the body, especially calcium and zinc deficiency. Data show that a diet high in sugar and protein can promote the development of myopia. This is mainly due to the metabolism of sugar in the body requires a large amount of vitamin B, resulting in excessive consumption of vitamin B, which affects the metabolism of calcium, while the elasticity of the eye wall and the content of collagen in the scleral tissue is reduced, and the eye S becomes longer, leading to myopia. In addition, calcium is also one of the most active elements in the body and plays an important role in physiological processes such as neuromuscular stress and nerve impulse conduction. Experts have measured the content of a variety of trace elements in the hair of more than 5830 refractive error children, and found that the majority of these myopic patients have varying degrees of calcium and zinc deficiency, especially calcium deficiency, so calcium deficiency can be seen as one of the important factors triggering myopia. Therefore, micronutrients also maintain the normal physiology of the eye muscles and the firmness and elasticity of the sclera, which, if lacking, can easily lead to eye fatigue, which can then develop into myopia. In order to better prevent myopia and myopia deepening in children, it is recommended that parents should supplement children’s daily meals with appropriate trace elements such as calcium and zinc. For example: fish, shrimp, shrimp skin, crab, seaweed, spinach, bones, soybeans, walnuts, peanuts and other foods are rich in calcium; fish, oysters, lean pork, beef, mutton, animal liver, kidney, eggs, cocoa, dairy products, peanuts, soybeans, walnuts, coarse flour and other foods are rich in zinc. However, the supplementation of trace elements must be carried out regularly under the guidance of a professional doctor, and cannot be done casually, otherwise it will easily produce side effects.