The invention discloses a PSASP (Power System Analysis Software Package) hybrid dynamic simulation based on adaptive impact load injection, and belongs to the field of power system analysis. In the method, on the basis of the inherent model and calculation function of the PSASP, actual measurement power data is directly injected into a simulation system in a form of constant power and an impact load, and the hybrid dynamic simulation is carried out. By use of the method, the inherent function of commercial software is used, new data interfaces do not need to be developed, in addition, the importing error of the equivalent parameter of an external system is avoided, and therefore, the method is simple, easy in implementation and high in engineering application value.