Abstract
Investment projects refer to investors at a certain period of time the new, expansion, alteration, restoration of a project by an investment activity. With the social productive forces and science and technology enhance the development of projects because of the increasingly market-oriented funding sources, investors concerned about the return on the project, the project's success or failure of the economic impact, social impact, environmental impact, all lead to the project investment improve decision-making demands. In addition investment in public works projects the size and complexity of the growing, showing a long cycle and high investment, the internal organization of complex features, in the implementation process there will be a large number of random interference factors, resulting in higher risk projects.
In order to ensure that the actual earning power, at the same time take into account their social, environmental benefits and capacity for sustainable development, decision-making at the project stage, to risk analysis as the main body, the project objective, reasonable comprehensive analysis and eva luation and to take corresponding measures to avoid risks, standardizing the construction of flow, control the cost of investment is necessary, which promote economic growth, improve the investment environment is of great practical significance。
Keywords ： investment decision-making； engineering projiect ；Feasibility Study
