In　order　to　decrease　lithium　extraction　cost,　pollution　and　energy.　A　new　and　efficient　technology　was　particularly　discussed　in　this　paper,　the　fluorine　chemical　method　to　extract　lithium　from　spodumene.　The　reaction　mechanism　had　also　been　analysed　by　studying　the　crystal　structure　variation　and　reaction　products.　The　results　show　that　hydrofluoric　acid　corroded　alpha-spodumene　in　low　temperature,　damaged　the　compact　chemical　bonds:　Li-O,　Al-O,　Si-O,　and　Al-O-Si,　and　generated　Li3AlF6　and　AlF3,　which　can　be　dissolved　in　sulfuric　acid.　Our　research　provides　theoretical　guidance　for　the　lithium　extraction　process　from　alpha-spodumene.