Compound Light Scattering Materials(LSMs) with polystyrene(PS) as the light scattering agents and Polymethylmethacrylate(PMMA) as the matrix were studied.The relationship between the haze and transmittance of samples and the amounts of agents was analysized for adjusting and controlling the light scattering properties of polymer materials which took the PMMA as the matrix.The results show that LSMs can be obtained with only a small amount of PS dispersed in PMMA. Experimental results also show that the transmittance of LSMs is 80% provided the content of PS is 1%. The haze could be improved from 50% to 80% with the aid of PMMAPS and the PMMAPS is able to increase the haze of LSMs by improving the compatibility between PMMA and PS. Therefore, LSMs with high haze and transmittance can be achieved by adjusting the amounts of PS and PMMAPS.