Since 2018，China’s PV market has been under downward pressure and is shifting from the incremental market to the stock market. In the first half of 2020，due to the COVID-19 epidemic，the economic downward pressure has increased，and consumers’ purchasing power and willingness have significantly decreased. Thus，the demand for PV has been greatly restrained. Based on big data，this paper deeply analyzed the development trend of China’s PV market，excavated the structural highlights of the market，studied and evaluated the development environment of the future market，analyzed the impact of various factors on the future trend and finally predicted the sales volume of the PV market in 2020.