With the promotion of global climate change response and green low-carbon development policies, Carbon Peak and Carbon Neutralization Strategy are actively implemented in China. In recent years, distributed roof photovoltaic (PV) power stations have developed rapidly. The roof PV system is sensitive to wind load, and the roof auxiliary structure (such as equipment room) will produce significant aerodynamic interference effect on the incoming flow, which increases the complexity of wind load design. In addition, in order to make full use of space, the application of high support in roof PV power station is becoming more and more extensive. However, most of the existing researches focus on the ideal roof low-support power station without interference. Thus, this study carried out the wind tunnel pressure test on the high-support PV array with auxiliary structure interference under a typical real roof, aiming to explore the influence of auxiliary structure interference on the wind pressure distribution of PV power station, and the effect of parapet height on the value of wind pressure of high-support roof, and compared with the current specifications. It was found that compared with the low support on the ideal flat roof, the negative wind suction of the high support photovoltaic array in the windward area near the eaves is significantly increased. In addition, the aerodynamic interference of the auxiliary structure will lead to a large positive wind pressure in the local area of the photovoltaic array, which needs to be paid attention to in the design. The increase of the parapet height has a significant optimization effect on the wind suction of the photovoltaic array near the cornice.