Abstract: This is an article in the field of mineral processing engineering. In order to promote the application of magnetization treatment in iron ore flotation and provide a certain basis for the construction of magnetization treatment theoretical system, the influence of magnetization treatment water on the flotation of pure minerals of hematite and quartz was studied, and the mechanism was analyzed from the aspects of wettability and adsorption capacity, and dynamic verification experiments were conducted. With a magnetization field strength of 150 mT and a magnetization time of 6 minutes, the recovery rate of hematite was 82.85%, an increase of 28.20%, at the position of the 1st magnetic field. Magnetization treatment of water is beneficial for the adsorption of sodium oleate on the surface of hematite, reducing its wettability and having no effect on quartz. After magnetization treatment of flotation water, the flotation rate constant of hematite increased from 0.54 to 0.61, and the maximum recovery rate increased from 57.18% to 85.63%. It indicates that the flotation effect of hematite after magnetization treatment is better than that without magnetization, and magnetization treatment can improve the flotation rate and recovery rate of hematite. The results of the condition test, mechanism analysis, and dynamic verification test are consistent.