The construction of photovoltaic power station is not only an effective supplement to local energy supply, but can also save primary energy and water resources such as coal and natural gas, and reduce the emission of various pollutants. After the completion of the project, it could save 33,708 tons of standard coal, reduce the emission of soot by about 4.38 tons and reduce the emission of greenhouse effect gas (CO2 by 92,161 tons, SO2 by 21.92 tons and NOx by 20.82 tons) per year. It is beneficial to local environmental protection.