Abstract: To solve the problem of limited CPU computing capacity in terrain rendering,the paper suggests that by using GPU,the structure of multi-resolution terrain,the wavelet inverse transform,and the large calculated load of the dynamic normal computing and so on,are handled.And by using client-side data caching and data pre-fetching strategies,the quality control of multi-user network roaming terrain rendering is achieved.The experiments show that the solution meets the needs of large-scale terrain roaming.