A vehicle seat (S), comprising: a cushion pad ; a skin for covering the cushion pad ; and a seat heater between the cushion pad and the skin for covering the cushion pad , wherein a groove is provided on a top surface of the cushion pad , elongated in the right and left direction of the vehicle seat (S); the seat heater comprises a first heater wire and a second heater wire which are arranged on an opposite side to each other through the groove , and a groove portion heater wire provided in the groove for connecting the second heater wire with the first heater wire ; the groove comprises a first corner located on a side on which the first heater wire is arranged, of both ends of an opening of the groove , and a second corner located on a side on which the second heater wire is arranged; the groove portion heater wire comprises one end portion extending toward a bottom of the groove beyond the first corner , an other end portion extending toward a bottom of the groove beyond the second corner, and a folded portion which is arranged in a central part of the groove in a direction of connecting the first heater wire with the second heater wire; wherein the folded portion is folded in an extending direction of the groove at the bottom of the groove , and the one end portion and the other end portion of the groove portion heater wire are inclined in the extending direction of the groove with respect to a depth direction of the groove characterised in that the groove portion heater wire extends so as to be inclined to the right and left outer end sides of the vehicle seat (S) with respect to the front to back direction toward the opening of the groove . a cushion pad ; a skin for covering the cushion pad ; and a seat heater between the cushion pad and the skin for covering the cushion pad , wherein a groove is provided on a top surface of the cushion pad , elongated in the right and left direction of the vehicle seat (S); the seat heater comprises a first heater wire and a second heater wire which are arranged on an opposite side to each other through the groove , and a groove portion heater wire provided in the groove for connecting the second heater wire with the first heater wire ; the groove comprises a first corner located on a side on which the first heater wire is arranged, of both ends of an opening of the groove , and a second corner located on a side on which the second heater wire is arranged; the groove portion heater wire comprises one end portion extending toward a bottom of the groove beyond the first corner , an other end portion extending toward a bottom of the groove beyond the second corner, and a folded portion which is arranged in a central part of the groove in a direction of connecting the first heater wire with the second heater wire; wherein the folded portion is folded in an extending direction of the groove at the bottom of the groove , and the one end portion and the other end portion of the groove portion heater wire are inclined in the extending direction of the groove with respect to a depth direction of the groove characterised in that the groove portion heater wire extends so as to be inclined to the right and left outer end sides of the vehicle seat (S) with respect to the front to back direction toward the opening of the groove . <EOS>