Abstract: For the advantages of zero emissions, long life and never-dried up, solar photovoltaic (pv) grid power generation has, become one of recently emerging industries at home and abroad, and the risk evaluation of pv grid power industry is the focus. According to the specific characteristics of solar photovoltaic power generation project, a risk evaluation index system was constructed, and an empirical analysis of solar photovoltaic power generation project was conducted by rough sets and fuzzy AHP. The results show that the stability and investment cost of pv grid generation play an important role in the project construction. So, pv grid power industry should keep in its own advantages, and in the meanwhile, improve the stability, lower cost, develop domestic product materials, improve their technology and product quality.