In recent years, China’s myopia rate has shown an overall high and low-age development trend. Therefore, myopia prevention and control products are paid more and more attention. Peripheral myopia defocus lenses (hereinafter referred to as "prevention and control lenses"), whose principle of function is mainly to apply the defocus theory to delay the deepening of the degree, are not widely selected by consumers. This paper expounds the working principle of prevention and control lenses and the reasons why they are not selected, and gives suggestions on the development.