Building photovoltaic roof structure

The invention discloses a building photovoltaic roof structure, and belongs to the technical field of photovoltaic roof structures, the building photovoltaic roof structure comprises a photovoltaic assembly, the upper surface of the photovoltaic assembly is provided with a cleaning assembly, the lower surface of the photovoltaic assembly is provided with a sewage collection assembly, through the structural arrangement of the photovoltaic assembly, the angles of multiple groups of photovoltaic solar panels can be adjusted in a staged or integrated manner, and the photovoltaic assembly can be conveniently cleaned. A high-low fall structure is constructed in cooperation with stretching and retracting of a hydraulic rod, it is ensured to the maximum extent that the light receiving face and the top of the device operate automatically based on the cleaning assembly, the dust cleaning effect is achieved, and accumulated water on the top can be automatically discharged through angle adjustment of a photovoltaic solar