A　series　of　red　light-emitting　phosphors　of　Li2Y4-xSmx(MoO47　were　synthesized　via　solid-state　reaction　at　a　high　temperature.　The　optimum　synthesis　conditions　of　these　phosphors　are　sintered　at　700℃　for　2　h,　the　mass　content　of　flux　H3BO3　of　3%,　and　the　doping　content　of　Sm3+　of　6%　in　mole.　The　reason　of　the　concentration　quenching　was　also　discussed.　The　results　show　that　the　phosphors　can　be　excited　by　ultraviolet　light　of　405　nm　effectively,　exhibiting　the　intense　red　emission　lines　at　646　nm,　corresponding　to　the　4G5/2→6H9/2　transition　of　Sm3+.　©　2015,　Chinese　Ceramic　Society.　All　right　reserved.