Abstract: Recently, with the introduction of relevant policies and the digital transformation of traditional industries, the pace of intelligent mine construction in China has accelerated significantly. Due to its specificity, intelligent flotation is a difficult point in mineral processing intelligence. This paper classified the techniques according to the degree of intelligent control, systematically combs through the definition and composition of intelligent flotation system, key sensing technologies, and enumerates some application examples. It is analyzed that the research around intelligent flotation focuses on the development of intelligent perception technology and intelligent decision-making system. The current industrial application shows that intelligent flotation can realize automatic control of relevant operating parameters, stabilize yield and product indexes to some extent. However, the overall construction is still in the primary stage, there is still much room for improvement in the perception accuracy, timeliness, anti-interference, environmental applicability and other aspects of intelligent flotation technology. New high-precision slurry grade (ash) measurement technology needs to be developed. Limited by the precision of intelligent sensing technologies, the relevant industries are expected to flourish in the future.