Damping prefabricated stair

The utility model discloses a damping prefabricated stairway, relates to prefabricated stairway technical field, including stairway main part, the surface of stairway main part is equipped with the damping subassembly, the damping subassembly includes mounting groove, four first damper, bearing plate, maintenance groove, maintenance plate and buffer subassembly, mounting groove is equipped with the bottom of stairway main part surface, four first damper is equipped with the bearing plate, the maintenance plate is equipped with the buffer subassembly. Four first shock absorbers which are arranged at equal intervals are fixedly arranged at the bottom end of the mounting groove, a stress plate is fixedly arranged at the top ends of the four first shock absorbers, a maintenance groove is formed in the surface of the stress plate, a maintenance plate is rotationally connected to one side of the inner wall of the maintenance groove through a short shaft, and mounting columns are fixedly arranged on the two sides of