This　paper　proposes　a　circular　threshold　quantum　secret　sharing　(TQSS)　scheme　with　polarized　single　photons.　A　polarized　single　photon　sequence　runs　circularly　among　any　t　or　more　of　n　parties　and　any　t　or　more　of　n　parties　can　reconstruct　the　secret　key　when　they　collaborate.　It　shows　that　entanglement　is　not　necessary　for　quantum　secret　sharing.　Moreover,　the　theoretic　efficiency　is　improved　to　approach　100%　as　the　single　photons　carrying　the　secret　key　are　deterministically　forwarded　among　any　t　or　more　of　n　parties,　and　each　photon　can　carry　one　bit　of　information　without　quantum　storage.　This　protocol　is　feasible　with　current　technology.