It is possible to provide an object detection device for detecting an object by using a plurality of radars with an improved accuracy of judgment of the same object and acquisition of position information when integrating detection results. The object detection device acquires a course of a detection point from a, c, and the like detected by a radar (11). If a detection point obtained by a radar (10) exists in a region based on the course (region where the Y coordinate is Yth1 to Yth2) and the relative speeds coincide, the object detection device and pairs the detection points as corresponding detection points. For example, pairing can also be performed for (e-f), (i-j) located at a distance.