The nano-powder La1－xDyxAlO₃( x=0,0.01,0.02,0.03,0.04,0.05) were prepared by solution combustion method with La(NO₃)₃·6H₂O,Dy(NO₃)₃·9H₂O and C₂H₅NO _2as raw materials.XRD,SEM,UV-VIS diffuse reflectance spectroscopy and fluorescence spec troscopy were used to study the crystal system,morphology and luminescence intensity.The results show that Dy³⁺ ions enter into the lattice of LaAlO3after calcined at 800℃ f or 4h by solution combustion method,The results of fluorescence spectrum analysis show that the main emission peak of La1－xDyxAlO_3powder is at 423nm at the excitation wavelength of 370nm and the band gap was 5.54eV close to the theoretical value 5.6eV.