To prevent only a moving image information from being diverted in the case of distributing images to a plurality of clients via a network.

The image distribution device that distributes images to the plurality of clients via a network includes a camera 20 that outputs the images, an image server 22 that outputs information independently of the images outputted by the camera, a changeover device 24 that selects the camera or the image server, and a WEB server 26 that controls the changeover device. The WEB server controls the changeover device such that the WEB server selects the camera for a 1st prescribed time and then selects the image server for a 2nd prescribed time.