SrFe₁₂O₁₉ was widely used in the fabrication of commercial permanent magnets and certain microwave devices. In this paper, the SrFe₁₂O₁₉ nanopowder was produced by sol-gel combustion method and the effect of sintered temperatures, such as 600, 800 and 1000ºC, on structural and magnetic properties of SrFe₁₂O₁₉ were investigated by XRD, SEM and VSM measurement. Saturation magnetization value of 54.7 emu/g and coercivity value of 2895 Oe were achieved for the sample sintered at 800°C and 28 nm grain size.