Combining sketching user interface and adaptive techniques with virtual reality (VR) techniques will be great helpful to virtual education application. It can improve the intelligence and friendliness of applications by enhancing the interaction processes between users and machines, and the effectiveness of virtual class environment is improved at the same time. This paper builds an adaptive sketch based user interface in virtual environment of education application, which is put into use to meet certain need of special applications. This paper focuses on the research of context process mechanism of sketch user interface of virtual environment of education in detail. Then the paper builds virtual education prototype, and the experimented results show verified the feasibility and effectiveness of this application prototype.