The invention relates to a hybrid simulation decision support system based on parallel distributed computing and an implementation method, a B/S mode architecture is used for the system, and the system comprises a parallel distributed platform and a service computing platform which are located at a server side and connected through a layer 2 switch; the parallel distributed platform comprises a data server, a scheduling server and a computing server, which are interconnected; the computing platform comprises an interactive processing server and a data processing server, and the interactive processing server and the data processing server both are connected with a terminal device through a 1000M switch. With the system and the method in the technical scheme provided by the invention, electromechanical electromagnetic hybrid simulation analysis computing is executed based on parallel distributed computing, parallel simulation can be executed simultaneously under situation of multiple grid division modes, simulation time is saved, and convenient conditions for users to compare different results of different grid divisions are provided.