Novel bookshelf

The utility model discloses a novel bookshelf. Including a base, a first side plate is arranged on one side of the top of the base; a second side plate is arranged on the other side of the top of thebase; a first sliding groove is formed in one end of the inner side of the first side plate, a first sliding block is arranged at the top end of the interior of the first sliding groove, a third sliding groove is formed in the end, close to the first sliding groove, of the inner side of the second side plate, a third sliding block is arranged at the top end of the interior of the third sliding groove, and a first frame is fixedly arranged between the first sliding block and the third sliding block. According to the utility model, two groups of first frames and second frames in different vertical planes are arranged; through cooperative use of the first frame, the second frame, a transmission mechanism composed of a gear, a first rack and a second rack in the first side plate, the verticalheight of the first frame