Abstract: The cube corner reflectors (CCR) have the depolarization effect, which will affect the efficiency of the adjust-free solid state laser, and can also be applied to the beam combination. Both of them require accurate polarization characteristics. The Mueller matrices of 6 transmission light paths of the cube corner were deduced by using analytic geometry and ray tracing. To improve the experiment, a scheme of dynamic detection of Stokes parameter was designed to get high precision data. The error rate is 4.470% and is within a reasonable range. This study have meaning for eliminating the depolarization effect of cube corner, improving the performance of laser and improving the efficiency of beam combination.