Abstract: Nanobubbles are also called submicron bubbles or ultra-fine bubbles. As a gas cavity struc‐ ture with nanoscale，its unique physical and chemical properties and stability mechanism have been scientif‐ ically explained by systematic demonstration. In order to study the unique physical and chemical properties of nanobubbles in detail，aiming at the problems of difficult separation of fine-grained minerals，low effi‐ ciency of sewage treatment such as mine wastewater and low utilization rate of tailings resources，the appli‐ cation status and mechanism of nanobubbles in mineral flotation，sewage treatment，slag soil improvement and other fields were studied and analyzed. Analysis and research show that nanobubbles not only have ex‐ traordinary stability and efficient mass transfer characteristics，but also can produce characteristic products such as reactive oxygen species（ROS）through interface effects. The great potential of nanobubbles in pro‐ moting the sustainable development of green economy and high-tech industries in the future is reasonably prospected.

Key words: nanobubbles, stability, green economy