The invention relates to glass. The glass includes a first connecting piece and a second connecting piece which are connected in a mutual nested mode, the position, connecting the two side edges, of the first connecting piece is provided with a groove, and the position, connecting the other two side edges, of the first connecting piece is provided with a projection; the position, connecting the two side edges, of the second connecting piece is provided with a projection, and the position, connecting the other two side edges, of the second connecting piece is provided with a groove; and the projections and the grooves are matched and installed in a matched mode, the size of the first connecting piece is equal to that of the second connecting piece, the grooves are U-shaped, and the projections are n-shaped. According to the structure, through matching installation of the first connecting piece and the second connecting piece, the purpose of forming small pieces of glass into large pieces of glass for decoration is realized; and the projections and the grooves are bonded through glass glue, connectivity between the first connecting piece and the second connecting piece is enhanced, and disconnection between the first connecting piece and the second connecting piece is avoided.