建设项目的投资预测是建设项目投资控制的重要功能和基础 ,但目前还缺乏适合我国工程实际情况且能进行计算机处理的投资预测模型 .据此 ,在分析现有投资预测技术方法的基础上 ,结合我国工程建设实际情况 ,运用建设项目投资控制的“2 8”原则 (Pareto法则 ) ,充分考虑建设项目实施过程中影响建设项目投资的全局因素和局部关键项两方面的变化 ,建立一套新的投资预测模型 . Investment forecast of construction project is an important function and basis of investment control of construction project, but there is still a lack of investment forecasting model that is suitable for the actual situation of our country and can be processed by computer.Therefore, on the basis of analyzing the existing investment forecasting technology, Considering the actual situation of engineering construction in our country, using the “28” principle (Pareto’s law) of investment control of construction project, taking full consideration of the global factors influencing the investment of construction project and the changes of some key items in the construction process, Investment forecasting model.