A multi-element lens of controlling defocus and eye diopter and an application thereof belong to the technical field of prevention and treatment glasses for myopia and hyperopia of eyes. One large unit convex lens (1) capable of generating large defocus is comprised. One small unit concave lens (2) capable of generating small defocus or focus through combination is combined on the lens of the large unit convex lens (1), or one small single lens (3) is separately provided on the large unit convex lens. When a human eye watches different distances through the lens, the central view region is in a small nearsightedness defocus or focus state, or a small farsightedness defocus or focus state, whereas the equatorial view region is always in a nearsightedness defocus state or farsightedness defocus state. Through the special influences of light on the view regions of human eyes, the growth of the ocular axis can be effectively controlled, which achieves the characteristics of good and fast prevention and treatment of myopia and hyperopia, and the use is convenient.
