A Sr(II) complex ［Sr(L)2(H2O)4］n (1) was synthesized with 1,4,5,8-naphthalene tetracarboxylic acid (H4L1) and strontium chloride hexahydrate under solvothermal conditions. The structure was characterized by elemental analysis (EA), single crystal X-ray diffraction (SXRD), powder X-ray diffraction (PXRD), infrared spectroscopy (IR) and thermogravimetric analysis (TGA). The single crystal X-ray diffraction results indicate that H4L1 undergoes in-situ reaction to generate 1,3-dioxo-1H,3H-benzo［de］isomere-6,7-dicarboxylic acid (H2L). In complex 1, each Sr(II) atom is located in the geometric configuration of a square antiprism. The L- ligands connect Sr atoms to form a one-dimensional chain structure. 2D supramolecular structure is formed through hydrogen bonding and π…π stacking interactions. The solid states luminescence behavior of complex 1 was explored. It is found that complex 1 produces a wide emission spectrum band (450~690 nm) at the excitation wavelength of 211 nm, and the maximum emission wavelength appears at 535 nm. Therefore, it can be seen that complex 1 is a potential green light material.