Innovative mode: first, inspection upgrade, old elevators add 4 categories and 12 high-risk detections: door system reliability, brake performance, suspension device wear, electrical insulation aging, data connected to Jiangsu Smart Elevator Platform; second, risk early warning, issue risk assessment report + safety prompt sheet after inspection, clarify hidden danger level, rectification period, preventive measures, major hidden dangers supervised by listing; third, graded supervision, divided into four colors: green (safe), yellow (concern), orange (rectification), red (stop use) according to risk, orange recheck monthly, red immediately sealed; fourth, assessment application, based on local standard Safety Assessment Specification for Old Traction Passenger Elevators, assessment results serve as basis for renovation, fund subsidy, insurance rate; fifth, smart empowerment, IoT real-time monitoring operation data, fault frequency, component temperature, abnormal automatic early warning, remote guidance. After implementation, old elevator accident rate in Jiangsu decreased by 45%, supervision efficiency increased by 50%.