Abstract: After analyzing Internet communication delay components and features，the Elman neural network is adopted to predict the Internet communication delay.The prediction is simulated using Matlab.The results show that the Elman neural network can provide a promising way to predict the Internet timedelay.In order to improve the dynamical characteristics and system ability of the neural network，a modified neural dynamic recurrent network based on input，output and hide layers is proposed.Simulation results show that the modified Elman neural network has better dynamic performance.