China is wealthy in bauxite resources,but,a majority of which is diasporic bauxite and has a lower ratio of aluminum to silicon.At present,in order to meet the technological requirements of producing alumina by Bayer process,flotation is widely used in removing the silicate gangue minerals in bauxite.This paper describes the collecting agents used in direct flotation and reverse flotation processes of bauxite in China,discusses the conventional collecting agents and a number of new ones developed at present,finally,prospects the study and development of collecting agents used in the flotation of bauxite.