Porcelain plates are common daily utensils, and the basic types are open, shallow-bellied, flat-bottomed, high-legged or round-legged. According to its function, it can be divided into fruit plate, soup plate, tray and so on. According to its shape, it can be divided into sunflower mouth plate, flower mouth plate, flanging plate, etc., mainly round, square or oval. Are all silicate products. Porcelain plates first appeared in the Neolithic Age, including gray pottery, black pottery and red pottery products. The earliest porcelain plate was primitive green glaze, which was first seen in Shang and Zhou Dynasties. Primitive celadon and celadon plates were produced in Han, Three Kingdoms, Western Jin, Eastern Jin and Southern and Northern Dynasties. At this time, the glaze of the porcelain plate fell off because of the loose combination of fetal glaze.