Provided are a spatial display method and apparatus for a monitoring device, which belong to the technical field of monitoring and display. The method comprises: clipping and displaying a current interface where a target monitoring device is located on a screen, and generating a clipped picture; in the clipped picture, calculating location coordinates of the target monitoring device; calculating position coordinates of the target monitoring device relative to the screen by means of operating the clipped picture and the location coordinates; and according to a route generated by a map file and a screen line drawn by means of the operation of an input device, calculating position coordinates of the target monitoring device relative to the clipped picture so as to display the geographical position of the target monitoring device in a space. The spatial display method and apparatus for a monitoring device in the present invention can accurately display a spatial position of a device unit, and, following the opera
