在体育理论的研究中， 往往是利用回归模型或灰色模型对运动成绩进行预测． 本文把神经网络模型方法引入体育研究中， 利用前传网络（Ｆｅｅｄ＿ｆｏｒｗａｒｄ Ｎｅｔｗｏｒｋ） 进行三级跳远成绩预测，得到了良好的拟合结果． 我们认为， 通过建立神经网络模型去研究运动竞技训练理论是有意义的，值得进一步探讨和研究 In the study of sports theory, sports performance is often predicted by regression model or gray model. In this paper, the neural network model method is introduced into the study of sports, and the feedforward network is used to predict the performance of triple jump, and a good fitting result is obtained. In our opinion, it is significant to study the theory of sports training through the establishment of neural network model, and it is worth further exploration and research