A new cadmium complex Cd(α-FRA)_2(Phen)(H_2O) was synthesized by self- assembly reaction of α-furoic acid, phenanthroline (phen), and Cd(NO_3)_2(4H_2O. It crystallizes in monoclinic, space group P21/c, with a = 0.6799(2), b = 1.7780(6), c = 1.6866(6) nm, β = 94.912(6)o, V = 2.0315(12) nm~3, Dc = 1.742 g/cm~3, Z = 4, Mr = 532.77, μ(MoKα) = 1.124 mm_(-1), F(000) = 1064, R = 0.0411, wR = 0.0790. The structural analysis shows that the cadmium ion is coordinated with two nitrogen atoms from one phen molecule and four oxygen atoms respectively f...