To provide a new underground bicycle parking facility which can realize both the compactness of a part exposed on the ground of the underground bicycle parking facility and the increase of accommodations of bicycles due to the improvement of a capacity.

The underground bicycle parking facility includes an underground structure 1 having an accommodation space for storing the bicycles in the underground, an elevating member 14 having a positioning part 14b for positioning the bicycle, an elevating device 4 for vertically elevating and lowering the elevating member 14 in the underground structure 1, many storing racks 2 arranged radially and in upper and lower multistages from the elevating device 4 as a center in the accommodation space of the underground structure 1 and a carriage 22 for delivering the bicycle between the elevating member 14 and the storing rack 2. In the underground bicycle parking facility, a user sets the bicycle to the positioning part 14b of the elevating member 14 elevated to the ground and the elevating device 4 lowers the elevating member 14 to the height of the storing rack 2 of the underground structure 1 under a state that a holder part 22a of the carriage 22 grips the bicycle on the elevating member 14.