To provide the housing mechanism and storing base of a two wheeler parking device and the wheel holding mechanism of a two wheeler transport device allowing safe and quick handling a heavy wheel such as a motorcycle.

This housing mechanism of a two wheeler parking device is composed of a storing base for housing a two wheeler A; a carrier 1 movable to a position fronting on each storing base; and a delivery means 3 for delivering the two wheeler A between the storing base 41 opposite to the carrier 1 and the carrier 1. The carrier 1 and the storing base are provided with a groove-shaped guide way 2 for guiding the wheel of the two wheeler A and a guide rail 4 to form a travel way for the delivery means 3 mutually opposingly, and the delivery means 3 is equipped with a wheel holding mechanism 14 having wheel stoppers 11, 12 for locatedly supporting a two wheeler front wheel B and an upright guide 13 to engage with the front part of the front wheel B for restricting its falling retreatably from the main body of the two wheeler A, and a travel section which supports a lift mechanism for vertically moving the wheel holding mechanism 14 longitudinally movably along the travel way of the delivery means 3.