The invention provides a coordinated control system and method for multiple convertor stations of a dynamic simulation platform. The coordinated control system comprises a voltage source converter module and a power interface module; the voltage source converter module is connected with an alternating current system through the power interface module; the voltage source converter module comprises a master station voltage source converter for controlling direct voltage and reactive power, and a slave station voltage source converter for controlling active power and the reactive power; the power interface module comprises a power amplifier for two-way transmission of the active power and the reactive power, a D/A board card and an A/D board card. The D/A board card is connected with a linear transformer through the power amplifier. The technical scheme provided by the invention can realize orderly starting of multiple sets of VSCs (Vehicle Stability Control) on the dynamic simulation platform, the impact caused by voltage and electric current generated during starting is reduced, the operating mode of the VSCs is reasonably set, and the stable operation of the multiple sets of the VSCs is realized.