Four　cadmium-organic　coordination　polymers,　namely[Cd(Hncpoi)(2,2＇-bpy)(H2O)]n　(1),　{[Cd2(Hncpoi)2(bpyp)(H2O)4]·3H2O}n　(2),　{[Cd2(Hncpoi)2(azpy)(H2O)2]·2H2O}n　(3),　{[Cd2(Hncpoi)2(dpe)(H2O)2]·2H2O}n　(4),　have　been　solvothermally　constructed　from　multi-carboxylic　organic　ligand　5-(2-Nitro-4-carboxyphenoxy)-isophthalic　acid(H3ncpoi),　Cd2+　ions,　and　different　auxiliary　ligands:2,2＇-bipyridyl(2,2＇-bpy),　1,4-bis-(4-pyridylmethyl)piperazine(bpyp),　4,4＇-azopyridine　(azpy)　and　1,2-di(4-pyridyl)ethylene(dpe),　respectively.　These　complexes　were　further　characterized　by　single-crystal　X-ray　diffraction,　PXRD,　elemental　analysis,　and　TG.　Single-crystal　X-ray　diffraction　showed　that　complexes　1　and　2　exhibit　1D　chain-like　structure,　and　complexes　3　and　4　are　2D　(4,4)　grid　layered　structure.　1D　chains　or　2D　layers　of　these　complexes　further　assemble　to　3D　supramolecular　architectures　via　intermolecular　interactions.　The　coordination　modes　and　configurations　of　secondary　ligands　have　a　crucial　influence　to　the　crystal　structures　of　these　complexes.　Meanwhile,　the　photoluminescent　properties　of　these　complexes　were　also　studied.　The　results　showed　that　there　are　close　relationship　between　the　secondary　ligands　and　photoluminescence　properties　of　these　coordination　polymers.　©　2018,　Chinese　Chemical　Society.　All　rights　reserved.