The rapid development of new energy not only reduces human's reliance on traditional fossil energy, but also makes a significant contribution to mitigating global warming. With the growing installed capacity of photovoltaic (PV) power, people pay more and more attention on influences of PV power stations on climate and environment. To solve this problem, scholars at home and abroad began to do research on this field in 2000. This paper depends on the large amount of research results, summarizes the research methods, mechanism of influences and the influences of PV power stations on climate. The researches show that, PV power stations will produce PV heat island effect in desert areas, which causes a rise of local surface air temperature, while they could reduce the energy consumption in urban areas and reduce the urban heat island effect. Besides, PV power stations also have influences on albedo and the land surface balance, which has effects on local and even global climate, the scope and extent of the impacts have not been accurately concluded, and still need more researches.