The present disclosure provides a sliding puzzle. The sliding puzzle includes a cylindrical support and a plurality of blocks. The cylindrical support provided with two opposite bottom surfaces and a side surface connected between the two bottom surfaces, wherein the side surface is provided with a guide rail structure. Each of the blocks is mounted on the guide rail structure and can slide along the guide rail structure to change a position. The sliding puzzle in this solution can effectively decrease the possibility of loss of block parts in an assembling process of the sliding puzzle and improves the convenience of use of the sliding puzzle. Meanwhile, compared with the paper card type and plastic sliding puzzles, the sliding puzzle in this solution improves the stereo perception and the funniness. The sliding puzzle is simple in structure, convenient to assemble, and connected firmly.