The invention discloses a communication control method for a main program and multimedia courseware of a spaceflight equipment training system; cross-platform (a Windows platform and an Android platform) communication control between the main program and the multimedia courseware of a universal training system can be realized. Stable communication can be realized by only adding a communication control function module at the main program end and the multimedia courseware end of the training system and appointing a communication type, communication protocol content and communication process control, the technology is simple to implement, and the communication is stable; the function of the main program of the training system can be easily extended, the efficacy of the multimedia courseware is exerted furthest, the training cycle is shortened, and the training effect is improved.