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.