Two binary complexes Eu(AA)3,Eu(MA)3 and two ternary complexes Eu(AA)3Phen, Eu(MA)3Phen were synthesized by the reaction of Eu2O3 with acrylic acid (HAA), methacrylic acid (HMA) and 1,10-phenanthroline(phen).The four complexes were characterized by elemental analysis, FT-IR, fluorescence and thermal analysis. It shows that the complexes have excellent thermal stability and fluorescence intensity. The ternary complexes have a significant increase in the luminous intensity compared to the binary complexes. The copolymers emit characteristic fluorescence of Eu3 and the fluorescence intensities increase with the increase of the concentration of the complexes in the copolymers. At the same time, there is no concentration quenching. The copolymers copolymerized with binary complexes have stronger luminous intensity than the copolymers copolymerized with ternary complexes under maximum solubility because the solubility of the ternary complexes in the mixture of MMA and HMA are less than the binary complexes.