Laser transmission in the atmosphere is influenced by the atmospheric turbulence and other factors, which may degrade the laser beam quality and the operational effect of the laser.The low spatial frequency part usually deviates significantly from theoretic value generated by power spectrum method.To solve the problem, we used H-V model to establish the model of atmospheric turbulence effects on laser at day and nigh, and the algorithm of Zernike to generate the phase screen of atmospheric turbulence.The result of simulation of atmospheric turbulence meets the Kolmogonov statistics law.The result shows that low-frequency part of atmospheric turbulence can be well reflected by the algorithm of Zernike, and the high-frequency part can also be reflected finely with the increasing of order of Zernike.The system parameters of ABL and ATL of USA were used to simulate the distorted wavefront of high-power lasers atmospheric propagation.The result shows that the maximal P-V value of turbulent phase screen of ATL is about 3.5λ, and is about 7.5λ for the ABL system, which may provide a reference to the design of the adaptive optic system for high-power lasers.