Abstract: This paper elaborates on the current application status and research progress of passive solar buildings and active solar buildings,and analyzes the solar thermal utilization technology that can be combined with buildings and the PV power generation technology that can be combined with buildings in active solar buildings.The results indicate that:1) The research methods for passive solar building technology are gradually shifting from qualitative analysis to qualitative,quantitative,and comprehensive analysis,with a focus on energy conservation and low-carbon,indoor thermal comfort,design optimization,and the application of phase change materials. 2) The performance coefficient and solar energy guarantee rate of the system are the research focuses of building solar thermal utilization technology,and equipment selection,system design,and operation strategy are the main research contents. Solar assisted heat pump heating systems are often used in conditions where solar energy cannot be utilized,such as cloudy,rainy,and snowy days. 3) Enhancing the ventilation of PV modules can cool them down and increase the PV power generation of BIPV buildings. Recycling and utilizing the heat generated by PV power generation can help improve the comprehensive energy utilization rate.