The invention aims at providing a gait walking-aid robot which comprises a base frame, wherein a first crankshaft and a second crankshaft are arranged on the base frame; a left pedal is respectively connected with left ends of the first crankshaft and the second crankshaft; a right pedal is respectively connected with the right ends of the first crankshaft and the second crankshaft; a first chain wheel is arranged in the middle of the first crankshaft; a second chain wheel is arranged on a connecting shaft; the first chain wheel is connected with the second chain wheel through a chain; a motor drives the connecting shaft to rotate; a seat is arranged in the position at the upper part behind the first crankshaft. According to the gait walking-aid robot, the gait training function and the walking-aid function are combined together, the steering is precise and convenient when walking forwards, and the operation is simple; in the gait training process, the seat can be elevated to assist standing and supporting, and a good gait training effect is achieved.