A medical information recording apparatus includes: an input portion that includes a plurality of input terminals and into which a medical image can be inputted from a plurality of image pickup apparatuses, and that detects whether the medical image is inputted through any input terminal among the plurality of input terminals and outputs a detection result a screen synthesis portion that performs synthesis processing according to one synthesis pattern among a predefined plurality of synthesis patterns for one or more of the medical images inputted through the plurality of input terminals, determines a medical scene or changing of the medical scene based on a detection result of the input portion, switches the synthesis pattern based on a determination result, and outputs a synthesized image based on the one or more medical images that are inputted and a recording processing portion that records the synthesized image as a single image file.