The invention provides a casting riser. The casting riser solves the technological problems that for castings with heavy and large portions being located at the centers, especially disk type castings, the methods of increasing technological patches and auxiliary chilling blocks and the like are needed in actual production so as to eliminate the shrinkage porosity defect and the shrinkage cavity defect of the castings, the patches are additionally arranged on the castings, after the castings are formed, the patch portions need to be polished away or removed through machining, as a result, the machining workload is increased, and the production efficiency is lowered. The casting riser is provided with a mold cavity. One side of the casting riser is provided with a riser neck, and the riser neck communicates with the inner side of the mold cavity. The casting riser can be widely applied to the casting technology, especially casting of the disk type castings with the heavy and large portions being located at the centers.