Abstract: Location prediction of vein gold deposit is a application studyquestion that is in urgent need of gold mine at present and for long. Location prediction of mineralization is conducted basedon relation of forming-ore fluid derived from objective and quantitative study of metal-logenic mechanism and variation of mineralization intensity that is caused by actua (data △ (T-P-Xi) of fluidself nature change after formingore fluid into mineralization system, by means of mineralization trend situation and trend analysis.