A gas turbine combustor comprising: an inner casing that forms a combustion chamber on an inside; an outer casing that covers an outer circumference side of the inner casing ; an annular channel formed between the inner casing and the outer casing , compressed air flowing in the annular channel ; an end-cover provided on a downstream side in a flowing direction of the compressed air of the outer casing ; a plurality of fuel nozzles supported by the end cover , the plurality of fuel nozzles jetting fuel; an air hole plate including a plurality of air holes formed to correspond to the plurality of fuel nozzles , the air hole plate being provided on the downstream side in a flowing direction of the fuel of the plurality of fuel nozzles ; a plate lip that covers an outer circumference side of the air hole plate ; an outer channel formed between an outer circumferential surface of the plate lip and the inner casing , the outer channel supplying the compressed air to an outer circumferential part of a portion on the plate lip side of the combustion chamber ; and a communicating hole provided in the plate lip , characterized in that an outer circumferential surface of the air hole plate includes a first surface joined to the plate lip and a second surface provided on the downstream side in the flowing direction of the fuel of the first surface and located further on a radial direction inner side of the air hole plate than the first surface to form a space between the second surface and an inner circumferential surface of the plate lip , and the communicating hole communicates the outer channel and the space . an inner casing that forms a combustion chamber on an inside; an outer casing that covers an outer circumference side of the inner casing ; an annular channel formed between the inner casing and the outer casing , compressed air flowing in the annular channel ; an end-cover provided on a downstream side in a flowing direction of the compressed air of the outer casing ; a plurality of fuel nozzles supported by the end cover , the plurality of fuel nozzles jetting fuel; an air hole plate including a plurality of air holes formed to correspond to the plurality of fuel nozzles , the air hole plate being provided on the downstream side in a flowing direction of the fuel of the plurality of fuel nozzles ; a plate lip that covers an outer circumference side of the air hole plate ; an outer channel formed between an outer circumferential surface of the plate lip and the inner casing , the outer channel supplying the compressed air to an outer circumferential part of a portion on the plate lip side of the combustion chamber ; and a communicating hole provided in the plate lip , characterized in that an outer circumferential surface of the air hole plate includes a first surface joined to the plate lip and a second surface provided on the downstream side in the flowing direction of the fuel of the first surface and located further on a radial direction inner side of the air hole plate than the first surface to form a space between the second surface and an inner circumferential surface of the plate lip , and the communicating hole communicates the outer channel and the space . <EOS>