The invention relates to a two-stage reagent removal method for ilmenite flotation concentrate and belongs to the field of mineral processing engineering. The two-stage reagent removal method for the ilmenite flotation concentrate includes the following specific steps of first-stage reagent removal, wherein after the slurry concentration of the ilmenite flotation concentrate is adjusted, sodium hydroxide is added, the pH value is adjusted to be 11 to 12, ferric sulfate is added, the materials are fully stirred for 15-20 min, filtering is carried out, and the ilmenite flotation concentrate obtained after first-stage reagent removal is obtained; and second-stage reagent removal, wherein after the slurry concentration of the ilmenite flotation concentrate obtained after first-stage reagent removal is adjusted, sodium hypochlorite and aluminum sulfate are sequentially added, the materials are fully stirred for 15-20 min, and then the final reagent-removed concentrate is obtained. The method aims at the ilmenite flotation concentrate obtained with sodium oleate and diesel oil as a collecting agent, the reagent removal effect is complete, the process is simple, and high adaptability is achieved.