This paper describes for the first time analytical results of Au and Ag inthe Rehai geothermal field of Yunnan Province and in the Yangbajing geother-mal field of Tibet. It is found that soil and rock over these geothermal fieldscontain fairly hish Au and Ag, associated with anomalies of such elementsas Ag, Ab, Sb, Bi, Pb and Tl, indicating that gold mineralization might existin the geothermal fields which, therefore, are favorable places for gold prospe-cting.