An endotracheal intubation support instrument which is, prior to endotracheal intubation where an endotracheal tube is inserted from an oral cavity of a patient into a trachea, inserted to the oral cavity of the patient, the endotracheal intubation support instrument comprising: a main body section having flexibility; a blade section being provided at a forward end of the main body section in an insertion direction; a handle section being provided at a backward end of the main body section in the insertion direction; and a U-shaped groove being provided in such a way as to extend from the handle section up to the blade section through the main body section, and open toward a front side of each of the main body section, the blade section, and the handle section, wherein the blade section comprises: a flap having a pair of side walls extending spacedly from both end portions with respect to a traverse direction of the U-shaped groove toward the front side; and a lifting body configured to raise the epiglottis of the patient; characterised by said lifting body being arranged at a position sandwiched by the pair of the side walls of the flap, and having a first protruding portion and a second protruding portion next to a backward portion of the first protruding portion in the insertion direction provided on each of both sides with respect to the traverse direction of the U-shaped groove, wherein the lifting body has an incision provided between the first protruding portion and the second protruding portion, the incision being configured to receive a tip of a peripheral portion of an epiglottis of the patient. a main body section having flexibility; a blade section being provided at a forward end of the main body section in an insertion direction; a handle section being provided at a backward end of the main body section in the insertion direction; and a U-shaped groove being provided in such a way as to extend from the handle section up to the blade section through the main body section, and open toward a front side of each of the main body section, the blade section, and the handle section, wherein the blade section comprises: a flap having a pair of side walls extending spacedly from both end portions with respect to a traverse direction of the U-shaped groove toward the front side; and a lifting body configured to raise the epiglottis of the patient; characterised by said lifting body being arranged at a position sandwiched by the pair of the side walls of the flap, and having a first protruding portion and a second protruding portion next to a backward portion of the first protruding portion in the insertion direction provided on each of both sides with respect to the traverse direction of the U-shaped groove, wherein the lifting body has an incision provided between the first protruding portion and the second protruding portion, the incision being configured to receive a tip of a peripheral portion of an epiglottis of the patient. a flap having a pair of side walls extending spacedly from both end portions with respect to a traverse direction of the U-shaped groove toward the front side; and a lifting body configured to raise the epiglottis of the patient; characterised by said lifting body being arranged at a position sandwiched by the pair of the side walls of the flap, and having a first protruding portion and a second protruding portion next to a backward portion of the first protruding portion in the insertion direction provided on each of both sides with respect to the traverse direction of the U-shaped groove, wherein the lifting body has an incision provided between the first protruding portion and the second protruding portion, the incision being configured to receive a tip of a peripheral portion of an epiglottis of the patient.