The invention provides a Jun porcelain moon white glaze. The Jun porcelain moon white glaze comprises the following raw materials in parts by weight: 44-51 parts of white feldspar, 9-15 parts of quartz, 12-18 parts of calcite, 5-7 parts of wollastonite, 2-4 parts of copper ore, 3-5 parts of tin oxide, 2.5-3.5 parts of bone ash, 8-12 parts of talc and 0.5-0.7 parts of iron oxide. Compared with theprior art, the Jun porcelain moon white glaze provided by the invention has the beneficial effects that through scientific and reasonable raw material ratio and controlled firing process, the preparedJun porcelain moon white glaze is relatively low in firing temperature, short in firing period, uniform in color, bright and smooth in glaze color, good in glossiness and high in yield; and the yieldcan be up to more than 98%.