Supporting device for gas turbine

A supporting device for a gas turbine includes a base frame (200); a fixing member (10) installed on the base frame (200) so as to support one endof a gas turbine; and an absorbing member (20) installed on the base frame (200) so as to support the other end of the gas turbine. The absorbing member (20) having lower stiffness than the fixing member (10) so as to deform in first and second directions when the gas turbine thermally expands.