White tea, a kind of micro-fermented tea, is a special treasure in Chinese tea. Because the tea is mostly buds, covered with pekoe, such as silver like snow and named. One of the six major teas in China. White tea does not go through killing or rolling, only after drying or gentle fire after processing tea, with the appearance of bud Millie complete, full of Millie, Millie fragrance fresh, soup color yellow green clear, light taste back sweet quality characteristics. The main producing areas of white tea are Fuding, Zhenghe and Zherong in Fujian [1], Xinzhou Old Street in Wuhan [2], Jiaocheng Tianshan, Songxi, Jianyang and Yunnan Jinggu. The basic process includes withering, baking (or drying), picking, reheating and other processes. Yunnan white tea technology mainly sun-green, sun-green tea advantage lies in the taste to maintain the original aroma of tea. Withering is the key process to form the quality of white tea. Because of the different varieties and raw material requirements of tea trees, white tea is divided into four kinds of products: Pekoe silver needle, white peony, Shou Mei and Gong Mei [20].