Motion parallax stereoscopic display exists the problems of multi-viewing field, sudden jumps between subzones, narrow main watching field, blurring etc, because of its low NA and aberration. In this paper, the idea of discrete sampling was applied to analysis the motion parallax stereoscopic display system. Based on the analysis and considering the manufacture procedure, a double micro-lens array screen combined with curve reflection surface was proposed. The simulation results show that this design makes improvement on the 3D display performance and viewing angle achieves almost 60 degrees. This proposal is of great significance to promote the practical application of the three-dimensional system.