Lepidolite　has　recently　become　valued　as　an　important　lithium　ore　resource　due　to　the　rapidly　increasing　demand　for　lithium　(Li)　for　lithium-ion　batteries　(LIBs).　However,　existing　processes　to　extract　Li　from　lepidolite　are　still　difficult　and　uneconomical,　since　the　amount　of　lithium　contained　is　typically　low.　Here,　a　fluorine　based　chemical　method　was　proposed　to　enhance　the　lithium　extraction　and　utilize　the　2-4%　F　from　lepidolite.　Additionally,　a　mixture　of　hydrofluoric　and　sulfuric　acid　(HF/H2SO4)　was　employed　to　theoretically　investigate　the　reaction　mechanism　of　the　fluorine-based　chemical　method,　since　HF　molecules　are　main　reaction　forms　in　the　reaction.　The　results　showed　that　the　HF/ore　ratio　played　a　dominant　role　in　the　acid　treatment,　especially　in　the　generation　of　fluorides.　The　added　H2SO4　slightly　accelerated　the　dissolution　and　affected　the　coordination　equilibrium　between　Al3+　and　F-.　The　dissolution　conditions　were　also　optimized　that　98%　of　Li　and　90%　of　Rb　and　Cs　were　efficiently　converted　into　lixivium　as　sulfates　using　an　ore/HF/H2SO4　ratio　of　1:2:3.5　(g/mL/mL)　at　85　degrees　C　for　3　h.　Lepidolite　was　selectively　dissolved　over　quartz,　resulting　in　the　relatively　selective　leaching　of　Li　over　Si　and　leaving　amorphous　Si　O　rich　layers　and　K2SiF6　in　the　residue,　which　will　be　beneficial　for　the　downstream　processes　of　purification　and　separation.　This　investigation　leads　to　advances　in　the　understanding　of　the　dissolution　behavior　with　this　fluorine-based　chemical　method　and　reflects　the　application　potential　of　introducing　fluorine　to　utilize　lepidolite.