The liver cirrhosis is a kind of common chronic liver disease, which is caused by different causes. As for the pathological changes, there are liver cell alteration, necrosis, fiber tissue hyperplasia, which feature the repeated interchange of three kinds of pathological course. Through the experimental research, S. H. Ma et al. found Out that the Xiaoyao Powder could reduce the content of collagen in the liver significantly, thus prevent the occurrence of liver cirrhosis. Its functional mechanism is to suppress the inflammation reaction and fiber emergence, because its ingredients can resist the liver cell alteration, necrosis in various degrees. The experiment also found that the Hetterosmilax Japonica and Angelica Sinensis are able to improve liver function significantly, and the Angelica Sinensis is able to improve the micro-circulation and protect the liver.