For　the　first　time,　a　threshold　quantum　secure　direct　communication　(TQSDC)　scheme　is　presented.　Similar　to　the　classical　Shamir＇s　secret　sharing　scheme,　the　sender　makes　n　shares,　S-1,　...　,　S-n　of　secret　key　K　and　each　receiver　keeps　a　share　secretly.　If　the　sender　wants　to　send　a　secret　message　M　to　the　receivers,　he　encodes　the　information　of　K　and　M　on　a　single　photon　sequence　and　sends　it　to　one　of　the　receivers.　According　to　the　secret　shares,　the　t　receivers　sequentially　perform　the　corresponding　unitary　operations　on　the　single　photon　sequence　and　obtain　the　secret　message　M.　The　shared　shares　may　be　reusable　if　it　can　be　judged　that　there　is　no　eavesdropper　in　line.　We　discuss　that　our　protocol　is　feasible　with　current　technology.