1. The plane and elevation of the stairs should be at 90 degrees. Clean up the stairs first, apply glue on the front edge of the stairs and the back of the anti-slip strips of the stairs, wait for it to dry, and then glue the glued area with a rubber hammer. That's it.
2. Or punch a hole in the aluminum alloy base, fix the stair anti-skid strip with screws on the surface of the stairs, and then insert a rubber strip on the surface.