A Zn coordination polymer [Zn(BDCA)(4, 4′-bpy)_0.5]_n (I) was successfully synthesized by solvent thermal synthesis based on 1, 3-benzodioxole-5-carboxylic acid (HBDCA), 4, 4′-bipyridine (4, 4′-bpy) and Zn(NO₃)₂. The structure was characterized by X-ray single crystal diffraction (SXRD), elemental analysis (EA), infrared spectroscopy (IR), thermogravimetric analysis (TGA) and X-ray powder diffraction (XRD). The results indicate that complex I belongs to the monoclinic crystal system, I₂/a space group, with lattice parameters of a=1.321 96 (11) nm, b=1.019 64 (9) nm, c=1.672 83 (14) nm and β=100.771 (6)°. The molecular formula is C₂₆H₁₈N₂O₈Zn. In complex I, the central Zn atom is located in a distorted tetrahedral geometry, and the ligand connects the metal to form a 1D chain structure. Hirshfeld analysis show that the chains can interact with each other through π…π stacking and C—H…O interactions to form a 3D supramolecular structure. In addition, the UV-vis diffuse reflectance spectra and solid-state fluorescence properties of complex I were also studied.