The Taoxikeng tungsten deposit located in Chongyi County, southern Jiangxi Province. In this paper, the authors carried out systemic measurements of homogeneous, freezing temperatures and salinities of fluid inclusions in wolframite and coexisting quartz of the main mineralizing stage. The results show that the homogeneous temperatures of fluid inclusions in quartz of ores are mainly from 160 ℃ to 260 ℃, and the salinities are 1.64%~6.67%;whereas the homogeneous temperatures of fluid inclusions in wolframite are mainly from 240 ℃ to 320 ℃, and the salinities are 6.45%~10.49%. The ore-forming fluids have the main composition of NaCl + H2O hydrothermal system, with minor or without CO2.