Rehabilitation walking aid robot

The invention relates to the technical field of robots, and provides a rehabilitation walking aid robot. The robot comprises a U-shaped vehicle body bottom structure, wherein two vertical 7-shaped supporting rods are symmetrically arranged on the vehicle body bottom structure, and the 7-shaped supporting rods are movably connected with the vehicle body bottom structure; a handrail structure with two handles is transversely arranged on the supporting rods, four wheels are arranged at the four corners of the bottom of the vehicle body bottom structure, a pedal is arranged in the middle of the vehicle body bottom structure, connecting pieces are arranged in the middles of the supporting rods, and the other end of a nitrogen spring is connected with the handrail structure and is used for adjusting the position of the handrail structure; the other end of a rotating air cylinder is connected to the vehicle body bottom structure and is used for adjusting the angle position relation between the supporting rods and th