TRUEMAP Digital Twin Spatiotemporal Big Data Platform is a platform level product developed by the "BIM+3DGIS+IoT" framework based on the technical accumulation and advantages of the digital twin space in the field of mobile measurement, geographic information, spatio-temporal big data, digital twin, Internet of things and other fields for more than 20 years.Based on 3D visualization technology, the platform integrates data collection and production, data governance, spatio-temporal service engine, IoT engine, and industry simulation engine to provide digital twin basic data services, platform support and secondary development capabilities for smart cities, factory parks, foreign trade ports and other industry applications. Through the construction of digital twins that form virtual-real mapping and dynamic interaction with the physical world, it provides intelligent empowerment for various activities such as operation management, command and decision making in the real world.