The invention discloses an elevator safeguard device based on image recognizing technology, which comprises the following parts: video sensor on the top of elevator wagon, monitor center computer, display mode to connect display device, wherein the video sensor connects wireless data of monitor center computer through wireless network exchanging equipment, which is the center of LAN in the building, the monitor computer contains safeguard microprocessor, which analyzes trapped person in the elevator through video information and detects accident of elevator.