The deviation between stock price and its intrinsic value, not only impacts the price making of our corporate,but also effects the share financing of our corporate. This paper firstly summarized the deviation between stock price and its intrinsic value internal and overseas, then made a simple introduction of the F&O model, and did amendment to this model. Followed, computed our corporate stock value by the financial figures of years from 1993 to 2004 by using the amended model. Finally, made a conclusion by the comparison between stock price and its intrinsic value that our corporate stock price had a serious deviation from its intrinsic value.