Abstract: By reviewing the development of the photovoltaic and wind power industry chain in 2019 and analyzing the four factors (policy,demand,supply and technological innovation) that affect the industrial development in 2020,this paper holds that the photovoltaic and wind power industry will flourish in 2020,grid parity and technological breakthroughs will contribute to cost reduction and efficiency improvement. The integration of the photovoltaic industry has accelerated. Technological upgrading leads to the survival of the fittest,and the competition in photovoltaic market comes into stable; Onshore wind power enters the rush-installation cycle,and offshore wind power develops on a large scale. Although there is a strong market demand,orders are concentrated to leading enterprises,and enterprises with better comprehensive strength will be more outstanding in the future.