The　massive　use　of　energy　has　led　to　a　serious　deterioration　in　environmental　quality.　This　paper　takes　green　energy　as　the　object　and　applies　computer　simulation　technology　to　study　the　relationship　between　green　energy　and　environmental　changes,　and　then　establish　a　model.　Firstly,　according　to　the　principle　of　support　vector　machine,　the　green　technology　innovation　strategy　selection　model　of　support　vector　machine　is　established.　Then,　the　grid　search　method　is　used　to　optimize　the　penalty　parameters　and　kernel　function　parameters　to　achieve　better　generalization　ability.　The　simulation　results　show　that　by　using　computer　simulation　technology　to　study　the　relationship　between　green　energy　and　environmental　change,　we　can　better　choose　green　strategy,　improve　energy　resource　productivity,　reduce　environmental　pollution,　help　formulate　green　energy　innovation　strategy,　and　improve　strategy.　The　accuracy　of　the　selection　is　of　great　significance　to　the　environmental　protection　and　the　sustainable　development　of　green　energy.　©　Springer　Nature　Singapore　Pte　Ltd.　2020.