Abstract: In order to further improve the sulfuration-flotation effect of malachite, the effect of staged sulfuration-flotation behavior of malachite was systematically studied through single mineral flotation tests, X-ray photoelectron spectroscopy (XPS) was used to analyze the mechanism of malachite staged sulfuration-flotation. The flotation results show that malachite had medium natural floatability and ammonium carbonate had better activation on malachite staged sulfuration-flotation; When the number of malachite segmented sulfuration-flotation stages is three, compared with the first, second and fourth stages, the sulfuration-flotation recovery rate of malachite increased by 14.68% and 5.44%, respectively. The effect of the four-stage sulfuration-flotation is poorer than that of three-stage sulfuration-flotation, and the recovery rate decreased by 1.62%. Therefore, achieving the effective flotation performancethe by the three-stage sulfuration-flotation; According to the results of X-ray photoelectron spectroscopy, under the condition of the same total dosage, the content of monovalent copper on the surface of the foam products of three-staged sulfuration-flotation is further increased, increasing the stability of sulfide films, improving sulfuration-flotation performance, enhancing adsorption of collectors, and increasing total flotation recovery.