The Air-Space-Ground Integrated Situational Awareness Platform fuses satellite, aerial, and ground data into a precise 3D fire sandbox, runs AI-powered minute-level simulation and spread warnings, visualizes resources and targets, and coordinates rescue forces for on-site command. Closing the sense–analyze–dispatch loop, it supported national "Emergency Mission 2025/2026" drills and the Beijing-Tianjin-Hebei joint exercise, proving strong digital support for cross-regional wildfire response.