Based on the Unity3D engine, 16 sets of interactive and roamable simulation software have been developed to simulate the fire emergency response process in the event of a disaster in buildings within the fire jurisdiction. Using UAV oblique photogrammetry and point cloud modeling technology, it truly reproduces complex building structures, equipment layouts and the locations of fire protection facilities. A virtual fire scene environment is established to support fire commanders and team members in 3D visualized deduction and training of fire fighting, rescue and evacuation plans. It intuitively displays the rescue plans organized by the fire rescue brigade in case of building fires, significantly improves the rationality of rescue routes, command decision-making ability and team collaborative combat capability, reduces actual disaster losses, and enhances the response speed of rescue organizations.