A mobile body comprising: a movement operation section capable of moving on a floor surface; a base body assembled to the movement operation section in such a manner as to be tiltable with respect to the floor surface; an occupant riding section mounted to the base body through the intermediary of a connection mechanism such that the occupant riding section can rock with respect to the base body; an auxiliary ground contact section which is connected to the occupant riding section in such a manner as to tilt together with the occupant riding section with respect to the floor surface, which is placed in a state in which a ground contact load for preventing further tilting of the occupant riding section can be generated in a case where an amount of tilting of the occupant riding section with respect to the floor surface increases to a predetermined amount, and which is configured to be capable of sliding or rolling on the floor surface in the state; and a stabilization control device which controls the movement of the movement operation section such that an attitude of at least the mobile body is stabilized in a state in which an occupant is riding on the occupant riding section, wherein the connection mechanism is configured to elastically rock the occupant riding section with respect to the base body according to the movement of a center of gravity of the occupant riding on the occupant riding section, characterized in that the connection mechanism is configured so that when the movement operation section moves forward in a non-grounded state of the auxiliary ground contact section, the base body rocks in a backward tilting direction and the occupant riding section rocks in a forward tilting direction with respect to the base body according to the movement of the center of gravity of the occupant to a front side. a movement operation section capable of moving on a floor surface; a base body assembled to the movement operation section in such a manner as to be tiltable with respect to the floor surface; an occupant riding section mounted to the base body through the intermediary of a connection mechanism such that the occupant riding section can rock with respect to the base body; an auxiliary ground contact section which is connected to the occupant riding section in such a manner as to tilt together with the occupant riding section with respect to the floor surface, which is placed in a state in which a ground contact load for preventing further tilting of the occupant riding section can be generated in a case where an amount of tilting of the occupant riding section with respect to the floor surface increases to a predetermined amount, and which is configured to be capable of sliding or rolling on the floor surface in the state; and a stabilization control device which controls the movement of the movement operation section such that an attitude of at least the mobile body is stabilized in a state in which an occupant is riding on the occupant riding section, wherein the connection mechanism is configured to elastically rock the occupant riding section with respect to the base body according to the movement of a center of gravity of the occupant riding on the occupant riding section, characterized in that the connection mechanism is configured so that when the movement operation section moves forward in a non-grounded state of the auxiliary ground contact section, the base body rocks in a backward tilting direction and the occupant riding section rocks in a forward tilting direction with respect to the base body according to the movement of the center of gravity of the occupant to a front side.