A motor structure for an electric wheelchair, includes a housing, a front cover, a rear cover, a rotating shaft, a rotor, a commutator sleeved on the rotating shaft and electrically connected to the rotor, and a brush power terminal fixed to the front cover and in contact with the commutator, and further including a plurality of tile-shaped magnets surrounding the rotor, a cross-section of each tile-shaped magnet is a symmetric structure about an axis thereof, each tile-shaped magnet includes an inner curved surface and an outer curved surface, and the centre of the circle corresponding to the inner curved surface and the centres of circles corresponding to the outer curved surface lie on a straight line and are distanced apart.
