1. A vehicle peripheral obstacle notification system comprising: a surrounding image input part that includes a plurality of cameras mounted on a vehicle and configured to acquire images of the surroundings of a vehicle; a composite image formation part that extracts a part of each of the surrounding images outputted from the surrounding image input part as composite image formation areas and composes a composite bird's-eye image from the extracted composite image formation areas; and an output part that presents a user with the composite bird's-eye image that the composite image formation part outputted, wherein the vehicle peripheral obstacle notification system further comprises: an object detection part that detects whether a moving obstacle exists in the surrounding images; said composite image formation part calculating the coordinate information of the moving obstacle on the composite bird's-eye image based on the detection result of the object detection part; an area determination part that, when the object detection part detects the moving obstacle, determines whether the position at which the moving obstacle is detected, on the basis of the coordinate information of the moving obstacle, is inside the composite image formation areas or outside the composite image formation areas and inside the surrounding images; and an image information extraction part which, if the area determination part determines that the detected position of the moving obstacle is outside the composite image formation areas and inside the surrounding images, extracts information about the detected position of the moving obstacle and extracts an image of the detected moving obstacle, wherein the composite image formation part superimposes the image of the moving obstacle on the detection position of the moving obstacle to the composite bird's-eye image based on the information about the detected position of the moving obstacle and the image of the moving obstacle output from the image information extraction part, and outputs the composite bird's eye image having the image of the moving obstacle superimposed thereon to the output part.