High humidity gas turbine equipment comprising: a compressor for compressing air; a combustor for combusting compressed air generated by the compressor and a fuel; a gas turbine driven by combustion gas generated by the combustor; a generator for generating power by being driven by the gas turbine; a humidifier for humidifying the compressed air by bringing the compressed air from the compressor into direct contact with hot water; and a regenerative heat exchanger for heating the compressed air from the humidifier by exhaust gas of the gas turbine, and feeding the heated compressed air to the combustor, characterized by further comprising: a first heating device (17, 18) for heating water recovered from the exhaust gas of the gas turbine by utilizing a factory exhaust heat medium from the outside to generate hot water for the humidifier; a second heating device for heating water by utilizing the exhaust gas of the gas turbine to generate steam or hot water to be supplied to the outside; a water recovering device for recovering water from the exhaust gas of the second heating device; a supply pipe system for supplying water recovered by the water recovering device to the humidifier; and the water of the water storing part of the humidifier is supplied from the water storing part of the water recovering device by a supply pump via a supply pipe system; wherein the first heating device (17, 18) comprises a heat exchanger that receive the factory exhaust heat medium provided in the supply pipe system or the circulation pipe system; and wherein the temperature of the factory exhaust heat medium introduced in the first heating device (17,18) is about 200°C or lower, and the temperature of the exhaust gas introduced in the second heating device is about 250°C or higher. a compressor for compressing air; a combustor for combusting compressed air generated by the compressor and a fuel; a gas turbine driven by combustion gas generated by the combustor; a generator for generating power by being driven by the gas turbine; a humidifier for humidifying the compressed air by bringing the compressed air from the compressor into direct contact with hot water; and a regenerative heat exchanger for heating the compressed air from the humidifier by exhaust gas of the gas turbine, and feeding the heated compressed air to the combustor, a first heating device (17, 18) for heating water recovered from the exhaust gas of the gas turbine by utilizing a factory exhaust heat medium from the outside to generate hot water for the humidifier; a second heating device for heating water by utilizing the exhaust gas of the gas turbine to generate steam or hot water to be supplied to the outside; a water recovering device for recovering water from the exhaust gas of the second heating device; a supply pipe system for supplying water recovered by the water recovering device to the humidifier; and the water of the water storing part of the humidifier is supplied from the water storing part of the water recovering device by a supply pump via a supply pipe system; wherein the first heating device (17, 18) comprises a heat exchanger that receive the factory exhaust heat medium provided in the supply pipe system or the circulation pipe system; and wherein the temperature of the factory exhaust heat medium introduced in the first heating device (17,18) is about 200°C or lower, and the temperature of the exhaust gas introduced in the second heating device is about 250°C or higher.