项目投资决策方法--贴现现金流量指标的理论分析

投资决策指标是评价投资方案可行或优劣的标准．用于投资项目决策的统计指标有许多种，其中净现值和内部收益率是投资项目动态经济评价与决策的两种基本方法．当然，这两种方法在理论和实际应用中存在一些模糊认识，包括这两个指标的经济意义，假设前提等等．本文对这两个指标进行全面的理论分析，以便投资者在决策实践中，更有效地利用这些指标，提高投资决策科学化的程度．

Investment Project Decision Method--Theoretical Analysis of Discounted-Cash-Flow Indices

Investrment decision indices is a standard of deciding Whether an investment project will do or not, Net Press net Value (NPV) and Internal Rate of Return(IRR) are two basic methods of deciding an investment project. They attach importance to project decision practice, Certainly, there are some confused ideas about their economic meaning, scientific hypothesis and applied problem. In this paper, theoretical analysis is carried out on the two indices in investment decision practice. These indices can be used effec- tively and scientific standard of investment decision be improved.