Abstract: A kind of foreign low grade chrome ore with the grade of Cr₂O₃ at 14.02%,in order to rationally develop and utilize the resources,treat the chrome ore as the research object in this paper and using magnetic separation-gravity separation joint process carry on the experimental study in the lab.Experimental results show that low intensity magnetic separation-high intensity magnetic separation-low intensity magnetic ore concentrate regrinding table concentrator gravity separation-high intensity magnetic concentrate grading-table concentrator gravity separation process can obtain the grade of Cr₂O₃ at 45.12%,recovery rate of 65.08%.