A　nonlinear　almost　periodic　predator-prey　model　with　n-preys　and　m-predators　is　studied,in　this　paper,　which　can　be　seen　as　the　modification　of　the　traditional　multi-species　Lotka-Volterra　predator-prey　model.　For　general　nonautonomous　case,　by　using　the　differential　inequality　theory,　we　obtain　the　sufficient　conditions　which　guarantee　the　uniform　persistence　and　nonpersistence　of　the　system;　After　that,　by　constructing　a　suitable　Lyapunov　function,　some　sufficient　conditions　are　obtained　which　ensure　the　global　attractivity　of　the　system.　For　almost　periodic　case,　by　constructing　a　suitable　Lyapunov　function,　sufficient　conditions　which　guarantee　the　existence　of　an　unique　globally　attractive　positive　almost　periodic　solution　of　the　system　are　obtained.　Examples　together　with　their　numeric　simulations　show　the　feasibility　of　our　main　results.　(c)　2006　Elsevier　Inc.　All　rights　reserved.