A gas turbine control device (70, 80) configured to control a fuel flow rate or an airflow rate in response to a target power output of the gas turbine, the fuel and the air being supplied to a plurality of combustors, the device comprising: a first function generator configured to establish the fuel flow rate or the airflow rate, in response to the target power output, the fuel and the air being supplied to each combustor; a second function generator configured to establish a correction value to correct the established fuel flow rate or the established airflow rate on the basis of the suction air temperature detected by a suction air temperature sensor that is provided when the gas turbine control device is installed in the gas turbine so as to detect the suction air temperature at an air inlet of the compressor; a third function generator configured to establish an amendment value to amend the established correction value as to the fuel flow rate or the airflow rate, in taking the target power output into consideration; a first computing element configured to compute a correction-amendment value by use of the correction value established by the second function generator and the amendment value established by the third function generator; a second computing element configured to compute an order fuel flow rate or an order airflow rate by adding the correction-amendment value to the fuel flow rate or the airflow rate either of which is established in the first function generator; a fourth function generator configured to establish a second correction value to correct the fuel flow rate or the airflow rate established in the first function generator, in response to the contents or the calorific value of the fuel; a fifth function generator configured to establish a second amendment value to amend the established second correction value, in taking the target power output into consideration; a third computing element configured to compute a second correction-amendment value by use of the second correction value established by the fourth function generator and the second amendment value established by the fifth function generator; and a fourth computing element configured to compute a flow rate as to the fuel or the air to be supplied to each combustor by adding the second correction-amendment value to the order fuel flow rate or the order airflow rate computed by the second computing element. a first function generator configured to establish the fuel flow rate or the airflow rate, in response to the target power output, the fuel and the air being supplied to each combustor; a second function generator configured to establish a correction value to correct the established fuel flow rate or the established airflow rate on the basis of the suction air temperature detected by a suction air temperature sensor that is provided when the gas turbine control device is installed in the gas turbine so as to detect the suction air temperature at an air inlet of the compressor; a third function generator configured to establish an amendment value to amend the established correction value as to the fuel flow rate or the airflow rate, in taking the target power output into consideration; a first computing element configured to compute a correction-amendment value by use of the correction value established by the second function generator and the amendment value established by the third function generator; a second computing element configured to compute an order fuel flow rate or an order airflow rate by adding the correction-amendment value to the fuel flow rate or the airflow rate either of which is established in the first function generator; a fourth function generator configured to establish a second correction value to correct the fuel flow rate or the airflow rate established in the first function generator, in response to the contents or the calorific value of the fuel; a fifth function generator configured to establish a second amendment value to amend the established second correction value, in taking the target power output into consideration; a third computing element configured to compute a second correction-amendment value by use of the second correction value established by the fourth function generator and the second amendment value established by the fifth function generator; and a fourth computing element configured to compute a flow rate as to the fuel or the air to be supplied to each combustor by adding the second correction-amendment value to the order fuel flow rate or the order airflow rate computed by the second computing element.