The Light scattering characteristics of microsphere optical elements were analyzed by using Mie theory in this paper.We have studied the mathematical character of the normalized scattered intensity,I s and its numerical computation results were given.We also have stuided the effects of the size parameter x and relative refractive indices m on the distribution of the normalized scattered intensity I s,so that we can evaluate the light focusing capability of microsphere optical elements.The results show that the microsphere optical elements would have good light focusing capability when their radiuses are large and their refractive indices are small.The results may provide a reference for selecting microsphere optical elements and analyzing their optical characteristics.