Disclosed in the present invention is a building-integrated photovoltaic curtain wall assembly, comprising a curtain wall body and a power generation structure, wherein a first cavity is formed in the curtain wall body and the power generation structure is provided in the first cavity. The first cavity is formed in the curtain wall body, so as to form a hollow curtain wall body which has good acoustic insulation and thermal insulation effects, thereby reducing the influence of noisy outdoor environment on indoor environment, reducing indoor and outdoor heat exchange, and maintaining a proper indoor temperature; it is not necessary to adjust the indoor temperature by means of an air conditioning system, reducing energy consumption of building.