A motorized armchair (1) for the movement of a person (P), in particular a person with motor impairments, comprising an adjustable motorized armchair structure (6) which comprises: a resting base (11)； a seat (69) and a back (64) which can be oriented with respect to each other and/or moved integrally with respect to each other relative to the ground (f)； at least one mechanical movement system (66), provided with at least one actuator (117, 118) and with kinematic transmission means (661), configured to move and/or orient the seat (69) and the back (64).The particularity of the invention resides in that it comprises a support and movement structure (10) adapted to be fixed to the armchair structure (6), between the resting base (11) and the ground (f), comprising:- a supporting frame (20) to which at least two driving wheels (41A, 41B) actuated by at least one motor (4A, 4B) and at least two steerable wheels (42A, 42B) are fixed so as to allow the movement of the motorized armchair (1) along the ground (f)； and in that it comprises furthermore a control interface (90) which is functionally connected to the at least one motor (4A, 4B) and to the at least one actuator in order to actuate the movements of the seat (69) and of the back (64) and the movement of the motorized armchair (1).
