The invention relates to a numerical simulation analysis method of a valve element nozzle of a servo valve.The method comprises the following steps of 1, geometric model building; 2, mesh generation of a model, wherein partition processing is conducted on a nozzle body channel model, and detailed mesh re-partition is conducted on the model subjected to partition processing through a tetrahedral mesh; 3, physical parameter setting; 4, boundary condition setting, wherein the model is adopted, an inlet boundary is set, an outlet boundary is set, a wall surface boundary is set, and a calculation method is adopted; 5, numeric simulation result analysis.According to the numerical simulation analysis method of the valve element nozzle of the servo valve, a mixed model and a dispersed phase model are adopted to conduct analogue simulation on an abrasive flow processing technology of the nozzle, the pressure and velocity distribution characteristics in a flow field under the mixed model are discussed, a particle erosion abrasion mechanism and influence of different speeds, particle sizes and temperatures on erosion abrasion are discussed under the dispersed phase model, and an important basis is provided for carrying out processing production subsequently.