Abstract：One-member company has both traditional company advantages but also have their own characteristics, can stimulate the enthusiasm of investors and enthusiasm, encourage investment, promote the economic and social development and prosperity. The new" company law" clearly gives a company with legal status, the improvement of Chinese legal system, perfect the market economy of our country free competition system of extraordinary significance. But as a result of the legislation system is not perfect as well as one's own defects lead to the lack of supervision mechanism, practice a person of company operation is also the problem of frequent. Through the study on the one-member company supervision mechanism defect and the new" company law" of the legal provisions, the relevant foreign legislation for reference, China one-member company supervision mechanism in-depth exploration and put forward a sound idea.
Key words: one-member company；internal and external supervision；legislative defects；new system reference