The BL-2003 undercarriage security inspection scanning system mainly checks the bottom of all types of vehicles, can quickly and accurately detect hidden explosives, weapons, suspicious items, contraband and illegal smuggling, smugglers, etc., faster and more accurate than traditional methods (such as hand-held mirrors, etc.), greatly improving the speed of detection of the bottom of the vehicle, At the same time, it also reduces the investment of human and material resources. The system makes use of advanced computer technology imaging principles to make the bottom image of the vehicle at a glance, can prevent dangerous vehicles from entering, prevent problems before they occur.