Polarized mini-three-dimensional projection system is mainly composed of a polarized mini-three-dimensional projector,a metal screen and polarized glasses.Aiming at this system,the impact of crosstalk on the quality of stereoscopic display is investigated.Then a crosstalk measuring system is implemented.In this paper,we measure and analyze the crosstalk induced by the polarized three-dimensional projector,the metal screen and the polarized glasses.The results show that the values of crosstalk caused by the three parts are in a descending order.It can be concluded that the quality of the polarized stereoscopic projector should be further improved,and the quality of the metal screen plays a decisive role in the mini-3D projection system.The research in this paper provides the performance parameters and quantitative indicators for the evaluation of mini-3D projection system,and a method for measuring the polarized stereoscopic projector performance parameters.