The invention relates to a spent fuel storage rack and in particular discloses a spent fuel storage rack in a pressurized water reactor nuclear power station. The storage rack comprises four enclosing plates, an upper bearing plate positioned at the tops of the enclosing plates, and a lower bearing plate and a storage sleeve which are positioned at the bottoms of the enclosing plates, wherein theenclosing plates, the upper bearing plate and the lower bearing plate form a cubic cavity; the storage sleeve is positioned in the square holes on the upper bearing plate and the lower bearing plate;base plates of the storage sleeve are positioned on the lower bearing plate; legs are fixedly connected with the lower bearing plate; thread sleeves on the legs are welded with the lower bearing plate; cylindrical convex plates are arranged at the bottoms of the thread sleeves; the upper ends of the thread sleeves are fastened with the lower bearing plate and the base plates by nuts; adjusting screws are arranged in and in threaded connection with the thread sleeves; the bottoms of the adjusting screws are freely positioned in the spherical recesses of bottom backing plates; and the base plates are provided with through holes communicated with the inside of the storage sleeve and the through holes are communicated with the through holes on the bearing plates. The storage rack has high storage capacity and good shock resistance.