Abstract: The current situation and development trend as well as key technologies such as high temperature magnetic bearing,high temperature displacement sensor,starter generator,and back up bearing for more electric gas turbine engines are reviewed.The information about this kind of aero engine in IHPTET Project is also introduced.Draper Laboratory,Synchrony Company,as well as NASA Lewis Research Center have been cooperating on the IHPTET Project for years to develop the high temperature magnetic bearing system,which is emphasized as the most important key technology for more electric gas turbine engines.Based on the references available,it is most possible that the high temperature magnetic bearing system developed by Synchrony Company will be used in IHPTET Project.By the end of 1997,a similar research project of AMBIT was drawn up in Europe Community.Britain,Germany,France,Austria,and Switzerland were involved in the AMBIT project.