The invention discloses a wind energy resource calculation method based on wind measurement data of several intra-area wind measuring towers. The method comprises the following steps of performing correlation analysis of wind speed data of all sites, wherein the correlation analysis refers to analysis of two or more than two variable elements with correlation, and therefore, the correlative osculation degree of the two variable elements is measured; establishing a wind speed relational expression between correlative sites according to a result of the correlation analysis, i.e. selecting a site of which the correlation coefficient is bigger than a set number and performing curve fitting on the site, and performing Markov model-based wind energy resource calculation on a function expression. The goal of quantitative analysis of the similarity and the specificity of a plurality of high-wind energy density distribution areas in a specific area under a complex terrain and the climate condition is achieved.