An apparatus for displacement of a human body is provided, which comprises: a cushion, a height adjustable movable platform, a first lifting mechanism, a guide rail assembly and a roller assembly. The first lifting mechanism is arranged on the cushion and is configured for lifting or lowering the cushion. One end of the guide rail assembly is positioned on the movable platform, wherein the guide rail assembly includes at least one guide rail. The at least one guide rail is simultaneously positioned under the cushion in a horizontal direction or a longitudinal direction at least in part. The roller assembly is arranged between the guide rail and the bottom of the cushion, in such a way that the cushion is capable of sliding to or off the movable platform along the guide rail.
