Numerical simulations for static turbulent phase screens are presented with power spectrum method(FFT). Also simulation methods for dynamic phase screen were presented by using traditional turbulence frozen method. An indoor atmospheric turbulence simulator was designed based on LC-SLM, and a simulation test bed was built. In the Kolmogorov turbulence laser propagation characteristic in different turbulent atmosphere was simulated. The experiments results were analyzed and showed the agreement with the theory. The response of bit error to intensity of turbulence were investigated, it is meaningful for value the laser communication system indoor test.