The present invention is a stair climbing drive device and a climbing drive method. In the concrete configuration of the stair climbing type drive device, a frame 20 in which the first wheel mounting bracket 21 and the second wheel mounting bracket 22 are spaced apart is provided, and the front of the first and second wheel mounting brackets 21 and 22 is provided. Between the front motor mounting platform 23, which is mounted on the front lift motor 40 is mounted between the drive gear 42, the drive gear 42 between the rear of the first and second wheel mounting base (21, 22) Is equipped with a rear motor mount 24 to which the rear riding motor 41 is mounted, and the front wheel 30 having the in-wheel motor 32 built in the front side of the first and second wheel mounts 21 and 22. ) Is mounted on the rear side of the first and second wheel mounting brackets 21 and 22, and the rear wheel 31 incorporating the in-wheel motor 32 is mounted and the first and second wheel mounting brackets 21 and 22. The front elevation support 50 is mounted directly below and below the front motor mount 23 between the front of the first and second wheel mounts 21 and 22 between the rear of the rear motor mount 24. The rear climb support 51 is mounted in the room, and the front climb support 50 or the rear climb support 51 is mounted in a pair of left and right on the basis of the connection table 52, and the drive gear (52) A driven gear 53 meshed with 42 is mounted, and the front is mounted between the front motor mount 23 and the first wheel mount 21 and between the front motor mount 23 and the second wheel mount 22. Hollow portions 27 are formed, respectively, so that the front climb support 50 can be rotated without interference, and between the rear motor mount 24 and the first wheel mount 21 and the rear motor mount 24. And a rear hollow portion 28 are respectively formed between the second wheel mounting bracket 22 and the rear climb support 51 enables rotational movement without
