The digital twin workshop has become a hot spot of public attention in recent years.It can realize the interconnection between the physical workshop and the virtual workshop with the help of virtual-real fusion technology,making the information of the virtual workshop more realistic and conducive to actual production.On the basis of the concept of digital twin,the characteristics and research application of digital twin workshop,the research on virtual-real integration of digital twin workshop was summarized.The research objects of virtual and real,namely physical workshop and virtual workshop,were introduced;the working process of workshop service system in virtual and real fusion system was discussed;the three key parts of virtual and real fusion technology and the support of related technologies were analyzed.Finally,the virtual-real fusion problem of digital twin workshop was discussed.