【Abstract】 As one of the important underlying technologies of the metaverse, Digital Twin technology is accelerating the integration with various experimental teaching methods. CT examination technology is an important course module in the field of medical imaging technology. However, there are practical difficulties in its experimental teaching, such as excessive reliance on hospital real physical equipment, limited experimental machine time, multiple standardized imaging and examination processes, and lack of interactivity. This article constructs a Digital Twin based CT examination technology virtual simulation platform that combines mechanism modeling and digital human body modeling. The platform framework structure and model foundation are presented, some simulation cases and functional modules are introduced, and the teaching effect of the platform is analyzed. This platform not only expands the limitations of learning time and space, but also provides an immersive and multi-angle CT examination technology experimental environment, which helps to carry out experimental teaching in related majors, empowers new forms of education, and enhances new practical experiences.