Tea-oil tree {Camellia oleifera A.) is one of the most important ligneous edible oil trees in China. It has large cultivated area, adsperse distribution and strong adaptivity. 90% of tea-oil is unsaturated fatty acid, such as oleic acid, linolaic acid, linolenic acid and so on. So it is a kind of excellent vegetable oil. Its byproduct also has important use, for example, saponin can be extracted from the withered cake. Besides its economical value, tea-oil tree has importance ecological worth in the south o...