本文基于灰色系统理论,运用相同的国内宏观经济数据,进行了GM(1,1)模型的构建和选择,并与正交尺度网络模型以及BP模型、小波神经网络模型等预测结果进行了对比研究,结果表明,本文所建立的GM(1,1)模型在有效性方面具有一定的优势。最后,本文运用GM(1,1)模型对我国未来5年国内生产总值的发展情况进行了预测,结果表明,在宏观经济环境不变的情况下,未来5年我国国内生产总值能够实现翻番。 Based on the gray system theory and using the same domestic macroeconomic data, the paper constructs and selects the GM (1,1) model and compares it with the results of the orthogonal scaling network model, the BP model and the wavelet neural network model The results show that the GM (1,1) model established in this paper has some advantages in terms of its validity. Finally, this paper forecasts the development of China’s GDP in the next five years by using the GM (1,1) model. The results show that under the same macroeconomic environment, China’s GDP can be realized in the next five years Double