The invention relates to the technical field of a space strategy 
supporting system in a 
geographic information system, in particular to a method for establishing a location selecting model of a mountain 
photovoltaic power station. The method comprises the following steps of conducting digital formalized description on a 
location factor and a corresponding index of the mountain 
photovoltaic power station according to the characteristics of the mountain 
photovoltaic power station; regarding a multidimensional location selecting index 
knowledge base, deriving a smallest location selecting property subset through a fuzzy 
rough set to replace an original property set on the basis that the location selecting classification capacity is not reduced, and obtaining a location selecting strategy 
list; extracting the corresponding property characteristic in the location selecting strategy 
list from a GIS, and establishing a membership 
degree function to evaluate and classify the 
station establishing potential of a specific geographical position. The method for establishing the location selecting model of the mountain photovoltaic 
power station can conduct quantitative relation derivation according to the situation that a plurality of micro and 
macro factors influence power generation amount of the 
power station to obtain a main 
influence factor. The space property relationship is analyzed based on a GIS data base, and direct strategy support to the location selecting of the mountain photovoltaic 
power station is provided.