A fuel spraying apparatus of a gas turbine engine, comprising: a first fuel spraying section configured to spray fuel for diffusion combustion; a second fuel spraying section configured to spray fuel for premixed combustion, the second fuel spraying section being disposed so as to surround the first fuel spraying section; and an air curtain generating section disposed between the first fuel spraying section and the second fuel spraying section, the air curtain generating section being configured to generate an air curtain which defines an outer edge of a diffusion combustion area in a combustion chamber, characterised in that: the first fuel spraying section comprises a cylindrical main unit having a double-wall structure configured to spray fuel for diffusion combustion, an inner swirler arranged in the cylindrical main unit, a spraying nozzle member configured to define a spray angle of fuel from the cylindrical main unit, and an outer swirler arranged between the cylindrical main unit and the spraying nozzle member; wherein an air injecting port of the air curtain generating section is disposed at an outer edge of the spraying nozzle member, the air injecting port being configured to inject air in the direction of the axis of the first fuel spraying section, wherein the air curtain generating section includes a storage chamber formed by the spraying nozzle member and an inner cylindrical intermediate wall of the second fuel spraying section. a first fuel spraying section configured to spray fuel for diffusion combustion; a second fuel spraying section configured to spray fuel for premixed combustion, the second fuel spraying section being disposed so as to surround the first fuel spraying section; and an air curtain generating section disposed between the first fuel spraying section and the second fuel spraying section, the air curtain generating section being configured to generate an air curtain which defines an outer edge of a diffusion combustion area in a combustion chamber, characterised in that: the first fuel spraying section comprises a cylindrical main unit having a double-wall structure configured to spray fuel for diffusion combustion, an inner swirler arranged in the cylindrical main unit, a spraying nozzle member configured to define a spray angle of fuel from the cylindrical main unit, and an outer swirler arranged between the cylindrical main unit and the spraying nozzle member; wherein an air injecting port of the air curtain generating section is disposed at an outer edge of the spraying nozzle member, the air injecting port being configured to inject air in the direction of the axis of the first fuel spraying section, wherein the air curtain generating section includes a storage chamber formed by the spraying nozzle member and an inner cylindrical intermediate wall of the second fuel spraying section. the first fuel spraying section comprises a cylindrical main unit having a double-wall structure configured to spray fuel for diffusion combustion, an inner swirler arranged in the cylindrical main unit, a spraying nozzle member configured to define a spray angle of fuel from the cylindrical main unit, and an outer swirler arranged between the cylindrical main unit and the spraying nozzle member; wherein an air injecting port of the air curtain generating section is disposed at an outer edge of the spraying nozzle member, the air injecting port being configured to inject air in the direction of the axis of the first fuel spraying section, wherein the air curtain generating section includes a storage chamber formed by the spraying nozzle member and an inner cylindrical intermediate wall of the second fuel spraying section.