The invention discloses a beneficiation method for strengthened recycling of fine-particle chromite. The beneficiation method comprises the following steps that firstly, magnetic separation is conducted, raw ore is subjected to strong magnetic separation, and strong magnetic separation rough concentrates and strong magnetic separation tailings are obtained; secondly, reselection is conducted, thestrong magnetic separation rough concentrates obtained in the first step are subjected to reselection, and reselection concentrates and reselection tailings are obtained; and thirdly, flotation is conducted, the ore pulp mass concentration of the reselection tailings in the second step is adjusted, a collecting agent and a foaming agent are sequentially added, one-time rough fine selection is conducted, then, the flotation closed-loop process including at least three times of fine selection, at least two times of scavenging and middling sequential return is conducted, and flotation concentrates and flotation tailings are obtained. The magnetic-reselection-flotation combined technology is adopted in the beneficiation method, the fine-fraction chromite can be effectively recycled, comprehensive concentrate reselection is conducted, the final chromite concentrate Cr2O3 grade is 42% or above, the recycling rate is 80%-90%, the chromite resource is effectively recycled, the integral cost islow, and the high technology index can be reached.