Under　the　conditions　of　a　bad　environment　continued　to　intensify,　clearing　the　government＇s　environmental　responsibility,　establishing　and　perfecting　the　relevant　system　of　environmental　protection　law　are　important　means　to　effectively　alleviate　the　contradiction　between　man　and　nature,　and　to　promote　the　sustainable　development　between　economic　society　and　the　natural　environment.　This　paper　takes　England　where　firstly　puts　forward　the　concept　of　low　carbon　as　an　example,　and　proposes　to　build　a　low　carbon　strategy　with　Chinese　characteristics.　The　application　of　BP　neural　network　and　the　hierarchy　evaluation　and　prediction　model　is　to　predict　the　environment　carrying　capacity　of　government.　Based　on　this,　the　application　of　computer　intelligent　evaluation　and　prediction　model　is　to　make　decision　and　evaluation　on　the　amendment　of　environment　law.　Combining　with　the　evaluation　data　to　decrease　the　malpractice　existing　in　the　process　of　law　establishing　and　perfecting,　this　provides　theoretical　and　technical　support　for　the　research　in　this　field　to　a　certain　extent.