Scandium (Sc),as an important strategic reserve resource in the new century,is widely distributed in nature,but its distribution is very sparse, the independent minerals of Sc are rare,and there are almost no independent deposits.There are huge reserves of Sc resources in bauxite series.Based on the statistics of Sc data of bauxite metallogenic belts in China,we find that Sc content is the highest in bauxite metallogenic belt of Southeast Yunnan and West Guangxi,and the formation age of Sc bearing bauxite series is mainly Carboniferous And Permian.Through the comparative analysis of the relationship between A/S and scandium,when A/S is less than 2.5,scandium content is generally higher,and has a positive correlation with A/ S and has a negative correlation with A/S when A/S is greater than 2.5.Thus,in bauxite series,Sc is distributed in top clay rock,middle iron bauxite and bottom iron clay rock and iron rock,especially in iron bearing bauxite series.Through the comparative analysis of the contents of various elements in bauxite series,it is found that scandium is positively correlated with iron,niobium,vanadium and chromium.Based on the mineral manifestations of other elements in bauxite series,it is speculated that the occurrence forms of scandium in bauxite series may be isomorphism,ion adsorption and ultra microstructure non structure mixture.In this paper,the possible occurrence forms,temporal and spatial distribution of scandium in bauxite series and the migration and transformation mechanism of scandium are preliminarily discussed and summarized,so as to provide theoretical support for the comprehensive utilization and development of associated scandium resources in bauxite.