Abstract: The present disclosure provides a decorative device. The decorative device includes a shell assembly. The shell assembly includes a plurality of blocks configured to be spliced to each other to form a predetermined modeling. The plurality of blocks includes a first block and a second block spliced with the first block. The first block includes a first main block and a first connection portion connected with the first main block. The second block includes a second main block. A first fixing portion is disposed on the first connection portion, a second fixing portion corresponding to the first fixing portion is disposed on the second main block, the second main block covers the first connection portion and the first fixing portion is configured to be fixed with the second fixing portion so as to connect the first block and the second block together.