The　(Li,　NH4)-LSX　molecular　sieves　with　different　Li+　exchange　degree　were　prepared　by　substituting　the　NH4+　of　NH4-LSX　via　solid-state　ion　exchange　method.　The　effects　of　the　exchange　temperature,　exchange　time　and　the　molar　ratio　of　Li+　in　LiCl·H2O　and　NH4+　in　NH4-LSX　on　the　ion-exchange　properties　of　resultant　samples　were　investigated　in　details,　and　therefore　the　optimum　conditions　of　the　Li+　ion-exchange　were　obtained.　Meantime,　XRD,　FT-IR,　SEM,　TG　and　NMR　techniques　were　employed　to　characterize　their　structures,　then　further　exploration　were　made　of　Li+　distribution　in　the　skeleton　of　the　(Li,　NH4)-LSX　structure　with　different　Li+　exchange　degree.