Project investment as the main investment activities of the enterprise development, is associated with the investment risk of the enterprise. How to evade the risk is important to the success of the project investment. In particular, choosing the appropriate direction and timing before project investment and the financial evaluation of investment projects, is an important aspect on determining whether the project investment is success or not, also is the priority must be considered before making decisions on the investment. How to make a quick and efficient decision with the relevantly financial index and make use of the existing resources to maximize the income of the project is the main problem of the investors. With the beginning of the selection of the financial index and the collection of the data, this paper tries to build a financial evaluation system to further improve Chinese system and make it more scientific and perfect.