One　dimensional　ferroelectric　materials　have　important　applications　in　the　field　of　micro-nanoelectronic　devices.　In　this　work,　three　kinds　of　ferroelectric　niobates　(KNbO3,　KSr2Nb5O15,　K0.5Bi2.5Nb2O9　)　with　different　structures　(perovskite,　tetragonal　tungsten　bronze-TTB,　bismuth　niobates　layer　structure-BNLS)　have　been　synthesized　by　using　the　one　dimensional　Nb2O5　as　precursor　through　topochemical　molten　salt　synthesis　(TMSS)　method.　Among　them,　perovskite-KNbO3　can　maintain　the　one　dimensional　morphology　of　the　Nb2O5　template.　TTB-KSr2Nb5O15　partly　inherited　the　template　morphology,　but　BNLS-K0.5Bi2.5Nb2O9　had　the　totally　different　morphology　with　the　Nb2O5　precursors.　Through　the　comparison　and　analysis　of　the　crystal　structure　of　the　three　target　noibates,　it　indicated　that　the　inheritance　of　template＇s　morphology　depended　on　the　product＇s　reassembly　modes　of　the　[NbO6]　octahedron.　Perovskite　type　ANbO(3)　(A　=　K,　Na,　Li)　with　the　corner-shared　[NbO6]　octahedron　was　most　conducive　to　the　succession　of　the　morphology　of　the　Nb2O5　template　in　the　three　products.　Relevant　results　can　help　us　to　choose　templates　and　target　products　more　rationally　for　synthesis　of　one　dimensional　nanomaterials　through　TMSS　method.