On December 21, 2020, The State Council Information Office issued a white paper titled “China’s Energy Development in the New Era,” in which the installed capacity of hydropower, wind power, photovoltaic power and biomass power generation in China ranked first in the world [1]. Solar photovoltaic power generation is the most important development direction of clean energy in the world. It is an important energy strategy to combine it with the field of construction in China. This paper mainly introduces the characteristics and problems of the key technologies of solar photovoltaic building integration, and explores its future development direction and ways, in order to constantly promote the industrialization of new energy technology in China.