An in-vehicle information processing device according to an embodiment of the present technology includes a control unit. The control unit detects presence or absence of an abnormality of a first monitor that displays a first image captured by a first camera among a plurality of cameras that capture an image of a predetermined region including a rear side of a vehicle, and switches, when detecting the abnormality of the first monitor, from a first mode in which the first image is displayed on the first monitor to a second mode in which the first image is displayed on a second monitor different from the first monitor.