In order to correct the polarization aberration of Schmidt prism and eliminate the double image and the ghost image, we derive the relationship between the factor B of the Jones matrix and the diffraction intensity. According to our derivation, the relationship between the factor B and the reflection phase shift δ on the roof surface is got. And the condition to eliminate the polarization aberration is to make the reflection phase shift δ=π clear. We will coat the phase film on the roof surface and we compare the characters of reflection phase shift between the single film and multilayer film and the characteristics for eliminating the polarization aberration in the visible region are achieved. An effective technical way to correct the polarization aberration about every polarization state B=0 is proved to be true. We have coated the samples and tested the polarization aberration of every incident polarization state. The experimental results have a good agreement with the theoretical result.