///Types of geochemical lithofacies may be classified into oxidizing-reducing lithofacies, acidity-alkalinity lithofacies, salinity lithofacies, temperature lithofacies, pressure lithofacies, chemical potential lithofacies, heterochemical potential lithofacies, and heterochronous heterochemical potential lithofacies, based on geochemical dynamics of fluids and series of rock associations. In the basin analysis, geochemical lithofacies may be applied to study on rock compositions in the sedimentary basin and evolution history of basin. It can help us to restore and rebuild types and compositions of fluid field, distribution areas and migration rules of fluid field, mechanism and dynamics of fluid migrations at the large-scale, and relationships of hydrothermal fluid superimposing during the deformation of basin in order to predication for mineral resource at the depth.