The invention relates to a beneficiation technology for iron ores high in aluminum content. The beneficiation technology for the iron ores high in aluminum content is characterized in that raw ore pulp, obtained after washing, with the iron grade being 37%, the grade of Al2O3 being 6% and the granularity being 1mm-0 is fed into a cyclone for classification operation, cyclone overflow with the oresat the granularity of -0.043 mm accounting for 90% is fed into magnetic separation operation composed of a medium-intensity magnetic separator and a high-intensity magnetic separator, high-intensitymagnetic concentrates and high-intensity magnetic tailings are obtained, the high-intensity magnetic concentrates are fed into a concentration basin, and underflow of the concentration basin is fed into reverse flotation operation composed of one-time coarse flotation and two-time continuous cleaner flotation. The beneficiation technology for the iron ores high in aluminum content has the advantages that the content of Al2O3 in the iron concentrates is effectively reduced, and the quality and economic benefits of the iron concentrates are improved.