Gold deposits in XiaoqinlingXionger Mountain area is the second large gold producing area in China. Through analyzing sulfur isotope geochemical characteristics of gold deposits in this area, the authors have reached some conclusions: ①gold deposits of different geneses have somewhat different total sulfur isotopic compositions: quartz veintype gold deposits generally have total sulfur isotopic composition of -5‰～5‰, indicating mantlederived sulfur, whereas gold deposits of altered rock type have total sulfur isotopic composition of ＜-5‰，resulting from sulfur isotopic fractionation caused by the change of the physicalchemical conditions during the mineralization; ②mineral composition and crystallization sequence can be deduced on the basis of isotopic composition variation of the residual hydrothermal solution; ③the moving direction of gold fluids can be indicated by the ratio of n(H2S)/n(SO2-4). It is therefore held that the variation of sulfur isotopic characteristics in the gold deposit is an objective factor in the study of the oreforming process, and that the conclusions reached can be improved in the oreprospecting practice.