PURPOSE: To prevent a turbine duct and a turbine rotor from coming into contact with each other even if thermal strain occurs in a turbine nozzle by temperature difference at the operating time of a gas turbine engine in the mounting structure of the turbine duct for gas turbine engine.

CONSTITUTION: A turbine nozzle 6 and a turbine duct 21 are separated from each other, and the turbine nozzle 6 is fixed on a compressor body 4 side and the turbine duct 21 is fixed on an exhaust diffuser 19 which is on the engine body side respectively. They are made to come into elastic contact with each other for engagement through a leaf spring 13 and a piston ring 22. Therefore, thermal strain of the turbine nozzle 6 is absorbed in the displacement of the leaf spring 13 and the piston ring 22, so that the thermal strain has no influence upon the turbine duct 21.