Leveraging multidimensional data and digital twin technology, 4Paradigm’s pandemic projection system accurately simulates the real-world transmission patterns of SARS-CoV-2, and provides powerful support for government decisions on COVID-related measures. Compared to traditional prediction models for pandemic evolution, the system fully predicts the impact of various factors such as nucleic acid tests/traffic restrictions/economic reopening/drug distribution, etc., on epidemic dynamics in a complex environment. Users can flexibly configure relevant variables and parameters in the system to build a more realistic simulation environment. The informative multidimensional visualisation maps the virtual world to the real world, giving users a sense of manageability and a more intuitive data presentation.