Abstract: Since the confirmation of nanobubbles’ stable existence on hydrophobic surfaces in 2000, research on their stability has developed rapidly with numerous related reports, leading to widespread applications of nanobubbles across various scientific fields. In flotation, theoretical studies related to nanobubbles have become increasingly comprehensive. Currently, the mechanism of how nanobubbles influence the flotation of fine particle minerals is a key research focus. To deepen the fundamental theory of fine particle flotation, the enhancement mechanisms of nanobubbles in fine particle mineral flotation were systematically summarized, mainly including the enhancement mechanism of bulk nanobubbles on the flotation process, the interparticle force mechanism induced by surface/interface nanobubbles,the mechanism of liquid film rupture on mineral surfaces induced by surface/interface nanobubbles, and the influence mechanism of surface/interface nanobubbles on particle surface hydrophobicity. Based on this analysis and the current research status of nanobubble-enhanced fine particle flotation, research gaps regarding the impact of nanobubbles on mineralparticle flotation were identified,providing new research ideasand technicalapproaches fornanobubble flotation technology of fine particles.