Abstract: Ore pre-enrichment also known as pre-sorting, pre-selection and discarding, mostly refers to the technology of sorting in advance according to certain characteristic differences before the ore enters the processing process such as fine crushing and grinding.With the rapid development of COLOR, XRF, XRT, laser induction, microwave and other sensor detection technologies, ore sorting technology based on advanced sensors has attracted great attention from well-known mining companies around the world.It is of great and positive significance to protect and reduce carbon in response to climate change.In this paper, by investigating more than a dozen international companies such as Tomra in Norway, Steinert in Germany, IMA Engineering in Finland, as well as Chinese companies such as Good Friends, Meiteng and Honest, and it is found that although the current ore pre-concentration is still developing rapidly, and it has basically formed a mature industrial chain with principles, methods, technologies, equipment, mine applications and effect evaluation.For historical and market reasons, the United States and Japan do not have an advantage in the field of ore separation.Meanwhile the Europe and Australia are relatively advanced in technology R& D as well as mining applications.Although Chinese companies started late, they have also developed rapidly.The recent emergence of solution-based integrated technology products for ore enrichment has continued to a certain extent the advantages and market share of advanced European beneficiation companies.Among the global market, the application effects and quantitative evaluation of pre-enrichment technology are mainly reflected in the aspects of grade improvement, waste rock removal, recovery rate, water and energy consumption, and production efficiency.Benefit from the rapid development of artificial intelligence, sensor technology and big data, ore pre-concentration technology based on advanced sensors is bound to usher in rapid development and large applications.