a certain proportion of new solid quaternary complexes SmL*L2Phen(L*=MMA,L=SA) of europium adulterated by cheap non-fluorescence lanthanum with the ligands of the cheap and popular methylmethacrylate (MAA), Salicylic Acid(SA) and 1, 10- phenanthroline (Phen). The complexes were characterized by elementary analysis,X-diffraction analysis,FTIR, Electron microscopy and fluorescence analysis. The results show that：Properties of the product was discussed when the mixing amount of La varied. the best result was achieved when the proper amount of La can streng then the red light luminescence of Sm, which comes to the best when mixing amount reaches 70%(mole proportion) Furthermore, the most in fluorescence emission peak of this series of complexeswas at585 nm,616 nm, 662 nm, which was most closed to the photosynthesis spectra ofvegetables.