Carbon peaking and carbon neutrality are related to the sustainable development of the Chinese nation and the building of a community with a shared future for mankind. In the future，new energy represented by wind power and photovoltaic power generation will become the main body of energy increase. The development of distributed rooftop photovoltaics across the county in Henan Province is another important measure to help achieve carbon peaking，carbon neutrality goals and rural revitalization，and is of great significance for promoting the healthy and orderly development of photovoltaic power generation. This paper sorts out the policy environment for the development of China’s photovoltaic industry，introduces the development of rooftop photovoltaics in counties in Henan Province，and selects typical sites for operational analysis. It discusses the opportunities and challenges for the promotion of rooftop photovoltaics throughout the county，which has certain guiding significance to promote the coordinated development of county rooftop photovoltaics and power grid.