Abstract: The iron grade of the mixed ore is 37.81%, and the main iron minerals are siderite and hematite, in which mineral contents are 50.35% and 24.28%, respectively, and the ratio of the two mineral contents is 2.07∶1. According to the properties and characteristics of the iron ore, high-intensity magnetic pre-concentration-neutral roasting process was studied, and good beneficiation indexes were obtained. The test results show that the high-intensity pre-concentration concentrate was obtained with grinding fineness of 80% -0.074 mm, and background field intensity 1 280 kA/m. With roasting temperature 750 ℃ for 20 min in neutral atmosphere, the iron concentrate with iron grade of 63.20% and iron recovery of 74.98% was obtained. It provides economical and reasonable technical basis for the development of mixed iron ore resources.