In order to analysis the wind load coefficient of magnitude of the mirror of 25 kW dish solar power, the analysis method of Computational Fluid Dynamics (CFD) was suggested. Based on three-dimensional model of software Pro/E, the model of 25 kW dish solar rotation paraboloid was established. The wind load coefficient on the mirror of dish solar power was calculated and the pressure of mirror and the velocity of the flow field was simulation by applying the software fluent. The force and moment coefficients of the dish solar mirror under the different azimuth and elevation angles were obtained. Also the pressure distribution and velocity distribution of mirror surface were found. The simulation shows that the wind load coefficient is gotten by using the computational fluid dynamics (CFD), which provide a important parameter base and guiding significance for the structural design of dish solar and the deformation under wind load of dish solar mirror.