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. <EOS>