A vehicle surroundings monitoring device comprising: an object detection unit provided in a vehicle and including a plurality of sonars whose detection ranges, that are prescribed at a predetermined angle set in advance, differ from each other at least partially, and an image capturing device detecting the direction and the distance of an object from the vehicle, whose detection range overlaps with the detection ranges of the sonars at least partially; a vehicle image generation unit for generating an image of the vehicle with the point of view set above the vehicle; a periphery image generation unit for acquiring and generating an image of the periphery of the vehicle from the point of view on a monitor, the image being partitioned into a plurality of regions in the periphery of the image of the vehicle; and a position-calculating unit for calculating a corresponding position of a detected object in the image of the periphery on the basis of detection results of the object detection unit, characterized by a degree-of-confirmation assessment unit for determining that a degree of confirmation meets or exceeds an assessment threshold set in advance when a direction in which the object exists is within the detection range of the sonar, and determining that the degree of confirmation is less than the assessment threshold when the direction in which the object exists is not within the detection range of the sonar, the direction being detected by the image capturing device; and an indicator unit for indicating a position showing existence of the object in the image of the periphery based on the calculation results of the position-calculating unit when the degree of confirmation of the detection results meets or exceeds the assessment threshold, and for indicating a region showing existence of the object among the plurality of the regions in the image of the periphery on the basis of the calculation results of the position-calculating unit when the degree of confirmation of the detection results is less than the assessment threshold. an object detection unit provided in a vehicle and including a plurality of sonars whose detection ranges, that are prescribed at a predetermined angle set in advance, differ from each other at least partially, and an image capturing device detecting the direction and the distance of an object from the vehicle, whose detection range overlaps with the detection ranges of the sonars at least partially; a vehicle image generation unit for generating an image of the vehicle with the point of view set above the vehicle; a periphery image generation unit for acquiring and generating an image of the periphery of the vehicle from the point of view on a monitor, the image being partitioned into a plurality of regions in the periphery of the image of the vehicle; and a position-calculating unit for calculating a corresponding position of a detected object in the image of the periphery on the basis of detection results of the object detection unit, characterized by a degree-of-confirmation assessment unit for determining that a degree of confirmation meets or exceeds an assessment threshold set in advance when a direction in which the object exists is within the detection range of the sonar, and determining that the degree of confirmation is less than the assessment threshold when the direction in which the object exists is not within the detection range of the sonar, the direction being detected by the image capturing device; and an indicator unit for indicating a position showing existence of the object in the image of the periphery based on the calculation results of the position-calculating unit when the degree of confirmation of the detection results meets or exceeds the assessment threshold, and for indicating a region showing existence of the object among the plurality of the regions in the image of the periphery on the basis of the calculation results of the position-calculating unit when the degree of confirmation of the detection results is less than the assessment threshold.