A semiconductor processing practical training system based on virtual reality comprises a virtual reality device end, a server end and a client end, trainees enter a virtual reality scene through the virtual reality device end to participate in teaching and training, and managers perform teaching and training management through the client end. The server end comprises an APP, a cloud server, a login module and a teaching resource module, and the client end comprises a storage module, an assessment module, an interaction module, an editing module, a data transmission module, a data analysis module and a high-performance graphic processing unit. According to the semiconductor processing practical training system based on virtual reality, the latest cloud technology is integrated into a VR practical training system, the powerful computing and graphic rendering capabilities of the cloud technology are fully utilized, the hardware configuration of the client end is reduced, more users are accommodated to participate in practical training interaction, high-quality graphic display and smooth user interaction experiences are provided, the defect of the practical teaching conditions is overcome, the space-time limitation is broken through, and the education resource sharing is achieved.