The invention relates to a high altitude mountainous area fuzzy multi-criteria wind power plant site selection method, and belongs to the technical field of wind power plant macroscopic site selection. The method includes the following steps: (1) building a hierarchical layer model with an analytic hierarchy process, (2) building a wind power plant space data base with a geographic information system platform, (3) measuring the wind power plant suitability degree with the fuzzy set theory, and (4) extracting the wind power plant suitable scope with the spatial analysis technology. The high altitude mountainous area fuzzy multi-criteria wind power plant site selection method has the practical application value on high altitude mountainous area wind power plant macroscopic site selection, and the application prospect is wide.