一、问题的提出众所周知,在项目财务评价中,无论是现金流入量Cl还是现金流出量CO,都涉及到材料、设备和产品的现行价格问题。在计算期内,对这些价格预测的准确程度,将是项目决策质量的关键。一般来说,现行价格变化因素有两类:第一类是由于价格政策变化引起国家定价和市场价比例变化,以及商品供求关系变化引起的供求均衡价格的变化,称为相对价格变动因素;第 First, the problem raised As we all know, in the project financial evaluation, whether the cash flow or cash outflow Cl, CO, are related to the current price of materials, equipment and products. During the calculation period, the accuracy of these price forecasts will be the key to the quality of the project’s decision-making. In general, there are two types of current price changes: the first one is the change of national pricing and market price due to the change of price policy, and the change of equilibrium price of supply and demand caused by the change of supply and demand of goods, which is called the relative price change.