At present, most of the studies on the wind load characteristics of PV panels are based on flat terrain conditions, and the studies on the wind load characteristics of PV panels in terrain with different slopes are rare. In order to reveal the influence of terrain slope on the wind pressure distribution of PV panels and wind load coefficients, FLUENT fluid simulation software is utilized, and the Reynolds time-averaged method and the turbulence model of the shear stress transport model are adopted to carry out the research on the wind pressure distribution law of PV panels with different panel tilting angles and different wind angles under different slopes and different terrains, as well as the wind load coefficients of PV panels. The results show that: the wind angle and installation tilt angle under different slopes have a significant effect on the wind load size of PV panels; the existence of the terrain will lead to wind bypass effect, but with the increase of the column height bypass effect will be gradually weakened; under different slopes and different panel installation tilt angle, the single PV panel body shape coefficient is larger than that of PV array body shape coefficient; the shading effect of the PV array leads to the second row of PV panels with the largest body shape coefficient. The shading effect of the PV array leads to a maximum attenuation of 70% for the second row of PV panels and 66% for the third row of panels. However, the presence of slope significantly reduces the shading effect and the maximum attenuation can be reduced by 45%. The results of the study can provide a reference suggestion for the design of PV arrays in terrains with certain slopes.