The invention relates to a building structure of a multi-building shared lift for a multi-storey residential building and a using method thereof. The building structure is characterized in that: the lower part of the residential building is provided with a track and a track stone block of the track, the track is flushed with a first floor, and the upper part of the residential building is provided with a correction protection track; correspondingly, the lower part of a lift shaft is provided with a roller power device, and the upper part of the lift shaft is provided with a roller mechanism; the lift can extend out of the lift shaft, passes through a gap between two tracks, and falls on the ground; when a resident of a certain residential building needs to use the lift, the lift ascends and enters the lift shaft first and then the lift shaft drives the lift to move transversely to the residential building; when the lift shaft stops, the lift descends to the first floor or a certain floor for lifting from the lift shaft; and residents of other residential buildings also can operate the life in the way. The building structure has the advantages that: originally, one lift is used by a residential building, and at present, one lift is shared by multiple residential buildings through improvement; and even though certain pieces of equipment is needed to be added, lift building cost afforded by each resident is greatly reduced.