Traditional electromagnetic transient simulation and electromechanical transient simulation have limitations in analyzing the complex large scale power system.The hybrid real-time simulation,with the advantages of both electromagnetic and electromechanical transient simulations,is a new method for analyzing the large scale power system transient stability and dynamic performance.This paper presents a hybrid simulation model of electromagnetic-electromechanical transient process based on RTDS-PXI.In this model,the electromagnetic transient program is independently developed and the electromagnetic-electromechanical transient hybrid real-time simulation is realized by parallel data exchanged process.Finally,by comparing with results of the small-scale whole electromagnetic transient process simulation model,it is shown that the RTDS-PXI hybrid real-time simulation proposed in this paper is feasible and effective.