This　paper　proposes　a　feasible　high-capacity　tripartite　quantum　secret　sharing　protocol　based　on　the　two-photon　polarization-spatial-mode　hyperentangled　state.　Alice,　the　secret　owner,　prepares　polarization-spatial-mode　hyper　-entangled　photon　pairs　and　distributes　them　to　two　agents,　Bob　and　Charlie.　Using　nonlocal　complete　Bell　state　analysis　technology　assisted　by　spatial　mode　entanglement,　the　two　agents　can　collaborate　to　distinguish　Alice＇s　Bell　state　in　polarization　degree　of　freedom.　Only　linear　optical　elements　are　needed　to　construct　the　agents＇　measuring　devices,　which　makes　the　protocol　more　feasible　in　experimental　implementation.　Compared　with　the　existing　quantum　secret　sharing　protocols　based　on　two-photon　entanglement,　this　scheme　does　not　need　two-way　quantum　communication　and　has　high　capacity　because　it　can　transmit　two　bits　of　information　with　a　polarization-spatial-mode　hyperentangled　photon　pair.　The　proposed　quantum　secret　sharing　protocol　is　secure　and　reliable　due　to　error　correction　and　privacy　amplification　technology.