In recent years, coordination polymers constructed from multidentate carboxylate and pyridyl ligands have attracted much attention because these ligands can adopt a rich variety of coordination modes and thus lead to the formation of crystalline products with intriguing structures and interesting properties. A new coordination polymer, namely poly[[μ-1,6-bis(pyridin-3-yl)-1,3,5-hexatriene-κN:N'](μ-naphthalene-1,4-dicarboxylato-κO,O:O:O)zinc(II)], [Zn(CHO)(CHN)], has been prepared by the self-assembly of Zn(NO)·6HO, naphthalene-1,4-dicarboxylic acid (1,4-Hndc) and 1,6-bis(pyridin-3-yl)-1,3,5-hexatriene (3,3'-bphte) under hydrothermal conditions. The title compound has been structurally characterized by IR spectroscopy, elemental analysis, powder X-ray diffraction and single-crystal X-ray diffraction analysis. Each Zn ion is six-coordinated by four O atoms from three 1,4-ndc ligands and by two N atoms from two 3,3'-bphte ligands, forming a distorted octahedral ZnON coordination geometry. Pairs of Zn ions are linked by 1,4-ndc ligands, leading to the formation of a two-dimensional square lattice (sql) layer extending in the ab plane. In the crystal, adjacent layers are further connected by 3,3'-bphte bridges, generating a three-dimensional architecture. From a topological viewpoint, if each dinuclear zinc unit is considered as a 6-connected node and the 1,4-ndc and 3,3'-bphte ligands are regarded as linkers, the structure can be simplified as a unique three-dimensional 6-connected framework with the point symbol 468. The thermal stability and solid-state photoluminescence properties have also been investigated.