Given the problem that the coefficient of performance of electric auxiliary heating devices in building integrated photovoltaic decreases significantly under cold winter conditions, a novel combined heat and power supply scheduling strategy for building integrated photovoltaic is proposed. First, a new combined heat and power system with a reversible solar thermal electricity cogeneration mode and a phase change energy storage system is established. The variation of coefficient of performance of the heat pump and photovoltaic output with environmental conditions is quantified and analyzed. Secondly, a building thermal network with equivalent thermal parameters is introduced to establish a community micro-grid model with heat and power systems, and the optimization objective is to minimize the community operation cost. Finally, an algorithm of differential processing and interactive iteration of the thermodynamic-electrical side problem is introduced to achieve an efficient solution of the optimization model. The simulation verifies the feasibility and superiority of the proposed energy supply mode and coordinated scheduling strategy. This work is supported by the National Natural Science Foundation of China (No. 52107095).