The copper(II) complex of α-pyridine formic acid was synthesized by room temperature solid-state reaction using α-pyridine formic acid and cupric acetate as reactants. The composition and structure of the complex was characterized by EDTA titration, elemental analysis, infrared spectrum, X-ray powder diffraction, thermogravimetric and differential thermal analysis. The chemical formula of the complex was Cu(C5H4NCOO)2?2H2O. The results of indexes to the X-ray powder diffraction data indicate that the crystal structure of the complex belongs to monoclinic system. The lattice parameters are: a = 1.3821 nm, b = 1.2308 nm, c = 0.7272 nm, β = 93.68? The results of characterization showed that the copper(II) was six-coordinated by the heterocyclic nitrogen atoms and hydroxy oxygen atoms in carboxyl of the two ligands, oxygen atoms from two water molecules, respectively.