To provide a moving person monitoring device capable of controlling vehicle signals and pedestrian signals efficiently through the investigation of the status of pedestrians and the number of the pedestrians at each crossing of each road thereby enhancing the safety for the pedestrians.

A camera 7 is mounted on a support 3 for a signal mechanism installed on a crossing of a road 1, the camera 7 photographs an image within a monitoring area of a prescribed range including a crosswalk 2, the system receives a timely consecutive image and extracts pedestrians M waiting for cross-walking in the vicinity of a pedestrian signal mechanism 5 from the received image and controls a vehicle signal mechanism 4 and the pedestrian signal mechanism 5 based on various sets of information (the number of pedestrians and waiting time or the like) obtained at that time.