Abstract: This paper provides an review of the current solar cogeneration technology in the industry, dividing it into conventional solar cogeneration technology and solar frequency division utilization cogeneration technology. The heating parameters of conventional solar cogeneration technology are low (usually below 80 ℃), and the photoelectric efficiency is generally lower than 20%, resulting in low comprehensive utilization efficiency of solar energy. The use of solar frequency division and cogeneration technology is expected to increase the power generation efficiency of the system to over 26% (conventional crystalline silicon photovoltaic modules), while obtaining heating parameters of no less than 200 ℃. However, this technology is still immature and further research is needed. And solar energy frequency division utilization and cogeneration technology are important research directions for the future development of solar energy comprehensive utilization technology。