Isotope thermometer and trace element thermometer are routine methods of temperature estimate in the field of geochemistry. Most of these thermometer equations scatter in various monographs, textbooks and article. It is quite difficult to sort out the proper geothermometer and calculate manually. The authors develop a software named GeoT using the VB6.0 and Access database. The software consists of isotope thermometer management module, isotope thermometer calculation module, trace elements thermometer management module, trace elements thermometer calculation module, and other thermometer modules. The GeoT is interface friendly and convenient to use.