The invention is a detection device, which includes a stander and a work plate for placing substance which is to be measured, an X-ray generator is arranged below the work plate, and an X-ray image-intensifier is arranged on the upwards side of the work plate, X-ray image-intensifier is connected to a display unit through a data control line and a control mainframe, the work plate is horizontallyset in the stander, the work plate can vertically make landscape orientation and length direction movement along the center of the X-ray image-intensifier, a load supporting work plate and an X axismovement mechanism and an Y axis movement mechanism which transversely and longitudinally moved relative to the stander are set between the stander and the work plate. X-ray generator is set in a Z axis movement mechanism which vertically moved relative to the work plate, surrounding of the X-ray generator, the work plate and the X-ray image-intensifier is arranged a shielded part for preventing the X-ray radiating external environment. In short, the invention has the advantages of safe use, stereotaxic location, high precision, and easy operation.