As new artificial sand, ceramic sand has been rapidly extended in foundry use in virtue of steady research and marketing for about two decades. Ceramic sand has excellent properties, including spherical shape, high refractoriness, good crush resistance, inert chemical characteristics, high reclamation yields, etc. Ceramic sand has distinguished performance in foundry in compare with silica sand and other popularly used special sands. This article introduces the production process, the physical and chemical properties, and the application features of ceramic sand, as well as its application examples in many kinds of foundry processes such as self-hardening molding, sodium silicate sand, cold box, Croning shell method, and lost foam castings. Some technical parameters of ceramic sand usage are also presented.