In order to exactly evaluate wind load on a photovoltaic array and determine the actuator axial force of tracking systems, a new wind load distribution model of photovoltaic array was proposed on the basis of the comparison between Japanese code and Chinese code, combined with the results of wind tunnel experiments. In detail, the wind pressures on the photovoltaic array had inhomogeneity, but roughly in trapezoidal distribution. The proposed model could provid a reference for the fine design of the photovoltaic structure as well as determination of the actuator axial force.