Virtual surgery simulation system is a typical application of virtual reality technology in medical field. Virtual surgery is a surgical system based on medical image data, which uses computer graphics to reconstruct a virtual human soft tissue model, simulates a virtual medical environment, and interacts with it with tactile interactive equipment, as shown in figure 1. The virtual surgery system provides doctors with a virtual three-dimensional environment and an interactive operating platform, which realistically simulates the whole process of clinical surgery. Compared with traditional surgical teaching, virtual surgery has the advantages of non-injury, repeatability and specificity. However, the research in this field is mostly limited to the visualization stage of simulation. Because of the lack of tactile effect, the surgery performed by doctors in virtual environment is very different from that in clinical environment.