The invention discloses an investment and financing aid decision evaluation method for a solar photovoltaic power station. The decision-making method comprises: considering the risk and uncertainty ofa photovoltaic power station project; considering the option value in the investment transaction of the photovoltaic power station; using the investment decision-making method based on the fuzzy entity option to carry out effective economic evaluation on the investment value of the photovoltaic power station, and based on photovoltaic power station and equipment performance levels, using technical and economic two-dimensional risk assessment, comprehensively rating the technical level and income capability performance of the photovoltaic power station. The problem that a traditional investment decision-making method is low in photovoltaic power generation investment evaluation value is solved, comprehensive rating and division of the technical level and income capability of the photovoltaic power station are achieved, and therefore more reasonable evaluation reference is provided for investment and financing decision-making of the photovoltaic power station.