Abstract：Simple and practical methods of processing delay factors affecting investment effect are put forward both qualitatively and quantitatively. The qualitative analysis mainly focuses on project construction cycle and investment recovery period, with which as independent variables a mathematical model is established to calculate investment delay time. The maximum correlation coefficient between fixed assets investment and GDP is worked out mainly by employing the method of univariate regression, thus investment time delay can be further calculated and the calculation method of GDP data after time delay is put forward. Finally, an empirical analysis is conducted based on the 10 year annual data in Jiaozuo Municipal Statistical Yearbook, real situation of economic operation and investment effect in Jiaozuo.

Keyword：investment effect;time delay factors;empirical analysis;