SiO2 geothermometer is widely used to evaluate the deep reservoir temperature and for occurrence of adiabatic boiling under 100 ℃,there are three correction methods.However,the boiling temperature is lower than 100 ℃ in areas with higher altitudes.The aim of this paper is to discuss the feasibility of existing SiO2 geothermometers with adiabatic boiling correction in highland areas.Methods:Based on the relationship between boiling temperature and altitude and the assumed true reservoir temperature,errors between calculated temperature using existing methods and the true temperature were assessed to discuss the feasibility.Results:From altitude of 0m to 6000m,boiling temperature decreases from 100 ℃ to 80.2 ℃.Errors from correction methods by Fournier（1977）,Fournier & Potter（1982）and Arnorsson et al（1988）were 1.1%～2.4%,0.1%～1.1% and 7.3%～8.7% respectively.Conclusions: SiO2 geothermometers with adiabatic boiling correction from Fournier（1977）and Fournier & Potter（1982）can be used in plateau areas and that from Arnorsson et al（1988）has a bigger error of 7.3%～8.7%.