Disclosed is a throw-out intelligent detection device and method. A throw-out intelligent detection device and method comprises an intelligent detection module, a display module, and a warning module. The intelligent detection module monitors and collects traffic conditions of tunnels and roads in real time, and transmits the traffic conditions to the display module, meanwhile, an internally embedded intelligent chip processor processes and judges a video image signal information through a background modeling step, a foreground detection step, a protected zone setting step, a foreground matching and updating step, and a throw-out judging step; if the throw-out exists, the display module displays the information of the throw-out in real time and sends a warning signal to the warning module, so as to remind the monitoring personnel to deal with the throw-out, thereby avoiding an accident. The throw-out intelligent detection device and method is not only able to intelligently detect the information of the throw-out, but the detection method is also able to avoid underreporting and false alarm at a certain degree, thereby providing an effective and executable solution for ensuring the traffic safety and the traffic order.