A vehicle surroundings monitoring apparatus that extracts a body present in the surroundings of a vehicle as an object, based on an image captured by an infrared imaging device including a binarized object extraction device that extracts a binarized object from image data obtained by binarizing a gray scale image of the image; a region setting device that sets a region including at least a portion of the binarized object on the gray scale image; a luminance status quantity calculation device that calculates a luminance status quantity of the region; an interval status quantity calculation device that calculates an interval status quantity according to an interval between a position of a substantially maximum luminance value and a position of a substantially minimum luminance value within the region based on the luminance status quantity; and an object type determination device that determines a type of the object based on the interval status quantity.