Elevator safety monitoring collects data through sensors, which are uploaded to the IoT cloud platform via NB-IOT/4G. It supervises the safety status of elevators in real time, automatically analyzes common faults and sound an alarm. Therefore, it provides all-round safety management, such as elevator fault alarm, trapped people rescue, daily control, quality assessment, and hidden danger prevention. The smart monitoring system ensures an elevator is safe to use and emergency rescues are carried out smoothly.