A method based on dual wavelength digital holography is proposed to measure the refractive index distribution and surface profile of micro-optics elements. Micro-optics elements are immersed in refractive index matching liquid to reduce the frequency of transmission light. The digital holograms of micro-optics elements are obtained under illumination of two different wavelengths, the refractive index distribution of micro-optics elements can be obtained according to phase distribution under two wavelengths. Surface profile of micro-optics elements can be calculated based on the refractive index distribution. Theoretical analysis and optical experimental results are performed to demonstrate its validity.