To uniformly finish the sliding surface of a landing slope to a flat surface in a short time and keep it in the best condition.

This maintenance device for ski jumping landing slope comprises a pair of guide rails 1 provided in parallel with a space, a reciprocating base 2 provided movably between the guide rails 1, a sliding base 3 provided on the upper surface of the reciprocating base 2 in such a manner as to be movable across the guide rail axial center, and a snow removing and pressing machine 13 loaded on the sliding base 3. The snow removing and pressing machine 13 has a snow removing plate 15 for scooping the snow on the sliding surface and a snow pressing plate for compacting the surface after the snow removal.