Wheelchair Lift, mainly consisting of rails and lifting platform plates, resemble a simple small elevator. The track is embedded in the wall at the entrance and exit of the passageway, and extends downward with the slope of the staircase to the interior of the tunnel. The platform can be folded against the wall when not in use so that it does not take up space at the entrance and exit of the passage. For wheelchair users, the four wheels of the wheelchair can be fixed on the platform, and the lifting platform can be controlled to enter the underground passage by pressing the switch, which is safe and convenient.