A vehicle surrounding monitoring device includes a first capturing device provided at a side of a vehicle in order to capture a first image, a second capturing device provided at front relative to the first capturing device in order to capture a second image, a displaying device for displaying the first image and the second image and for monitoring a vehicle surrounding, an image process device by which a borderline between the first image and the second image is defined in a combined image of the first image and the second image so as to be identical with a straight line connecting a position of the first capturing device and a position of the second capturing device.