To make it possible to freely move a moving body between level surfaces located at different heights that are not connected by a vertical member. A moving body includes a movable moving part, an expansion/contraction part disposed in the moving part and configured to expand and contract in a vertical direction, a first engagement part disposed at a tip of the expansion/contraction part and configured to engage with a member located in a surrounding environment, and a control unit configured to control the moving part and the expansion/contraction part. The control unit moves the moving part to a target height position by engaging the first engagement part with a member located at the target height position and then expanding or contracting the expansion/contraction part.