Abstract: Barium ferrite have been made in air by Magnetic field induced self-propagating high-temperature synthesis（SHS）,the magnetic field strength individual is o.63T,0.86T and 1.3T.The microstructure,phase composition and magnetic performance of the combustion products were characterized by SEM,XRD and VSM.The results show that a magnetic field causes a significant change in combustion temperature,the products are compound of BaFe₂O₄ and BaFe₁₂O₁₉ when the combustion temperature are lower.The product is pure BaFe₁₂O₁₉ by SHS when external magnetic field of 0.86T,meanwhile intrinsic coercive force（Hci） and relative remanence（Mr） of the sample increased individually of 50% and 32%,compared that obtained in zero magnetic field,they are 1083（4π）^-1·kA·m^-1 and 16.16 A·m²/kg.Magnetic performance of BaFe₁₂O₁₉ can be improved magnetic field induced SHS.