Corporation valuation is extremely critical when individuals decide whether to buy the stock of a certain company. This paper is aimed to analyze the value of Alibaba via different valuation models utilizing the most accurate data we can find and give the most suggestions for people who consider buying this stock. In addition, the research will move forward to forecast the future development of Alibaba by our reasonable conjectures and explanations. Discounted Free Cash Flow Model and P/E ratio model were used in this research in order to unfold the most comprehensive analysis within our power for Alibaba. This paper chiefly calculated the P0 value of American Alibaba Group which is 217.53 USD by the forecasted future cash flow of American Alibaba Group in five years, DCF Model and P/E ratio model will be utilized in the discussion between American Alibaba Group and Amazon, which yields the fact that the company has a great potential to invest.