The red nano-phosphors, La2(MoO4)3:Eu3+, were synthesized by solvothermal method using lanthanum and europium stearate as starting materials. X-ray diffraction (XRD), transmission electron microscopy (TEM) and fluorescence spectroscopy were employed to characterize the obtained products. The effects of solvent, reaction time, reaction temperature and Eu3+ ions dopant concentration on the morphology and luminescence properties of La2(MoO4)3:Eu3+ were investigated. The results indicate that the tetragonal La2(MoO4)3 :Eu3+ with an average size of less than 100nm were synthesized at 180 ℃ for 12h using isopropyl alcohol as the solvent. The obtained La2(MoO4)3 :Eu3+ can be excited with near-UV 395 nm and blue (462.5 nm) light and exhibit the characteristic red emission of Eu3+ at about 613.5 nm, and the optimal doping concentration is 15 mol %.