A collision monitoring apparatus can include a camera to acquire a video image of surroundings of at least one target protection component on the C-arm X-ray machine system； an image processor to determine a scene of the surroundings of the at least one target protection component according to the video image； and a controller to control a C-arm X-ray machine system to stop moving or slow down when it is determined that a possible collision exists according to the scene of the surroundings of the at least one target protection component. Advantageously the apparatus effectively prevents patients, operators, patient examination beds and other obstacles from suffering a serious collision with the C-arm itself.
