The invention discloses a stair-climbing luggage case, which comprises a box, wherein a connecting plate is fixedly connected with the bottom of the box, connecting rods I are movably installed on twosides of the bottom of the connecting plate, a fixing sleeve sleeves the surface of each connecting rod I, a bearing is fixedly connected with the outer wall of each fixing sleeve, a three-directionwheel body is fixedly connected with the outer wall of each bearing, a groove I is formed in the top of one end, away from the connecting plate, of each connecting rod I, a fixture block located on the top of each groove I is slidably connected with the interior of each fixing sleeve, and the bottom end of each fixture block is clamped in the corresponding groove I. According to the stair-climbingluggage case, by arranging the connecting plate, the connecting rods I, the fixing sleeves, the bearings, the grooves I and the fixture blocks, the three-direction wheel bodies can be installed on two sides of the box and can be removed when the luggage case needs to be put away, thereby reducing the space occupied by the luggage case; the luggage case is simple in structure and easy to operate,also provides convenience for storing the luggage case.