An air jet loom with a weft withdrawing device comprising: a blow nozzle blowing a weft (Y) that is ejected from a weft insertion main nozzle and determined to be a weft insertion failure to guide the weft (Y) to a weft withdrawing passage adjacent to a weft insertion passage; a weft introducing duct that is integrally swingable with a sley forward and backward and to which the weft (Y) blown and guided to the weft withdrawing passage is introduced; a weft withdrawing mechanism provided on the weft withdrawing passage , and withdrawing the weft (Y) guided to the weft introducing duct by a pair of rollers , wherein one of the pair of rollers is movable so that the one of the pair of rollers brings the weft (Y) into contact with the other of the pair of rollers ; and a weft sensor optically detecting the weft (Y) that is withdrawn through the weft withdrawing passage , characterized in that the air jet loom with the weft withdrawing device includes a weft guide member having a guide recess to which the weft (Y) is introduced when the pair of rollers is brought into press-contact with the weft (Y) and supporting the weft sensor at a position where the weft sensor detects the weft (Y) introduced to the guide recess , the weft guide member includes a cloth fell side top portion having a top portion near a cloth fell and a let-off side top portion having a top portion near the warps (T) to be let-off, wherein the cloth fell side top portion and the let-off side top portion are located in a front side and a rear side of the guide recess , respectively, and the cloth fell side top portion is located above the weft withdrawing passage in a state before the pair of the rollers is brought into press-contact with the weft (Y). a blow nozzle blowing a weft (Y) that is ejected from a weft insertion main nozzle and determined to be a weft insertion failure to guide the weft (Y) to a weft withdrawing passage adjacent to a weft insertion passage; a weft introducing duct that is integrally swingable with a sley forward and backward and to which the weft (Y) blown and guided to the weft withdrawing passage is introduced; a weft withdrawing mechanism provided on the weft withdrawing passage , and withdrawing the weft (Y) guided to the weft introducing duct by a pair of rollers , wherein one of the pair of rollers is movable so that the one of the pair of rollers brings the weft (Y) into contact with the other of the pair of rollers ; and a weft sensor optically detecting the weft (Y) that is withdrawn through the weft withdrawing passage , characterized in that the air jet loom with the weft withdrawing device includes a weft guide member having a guide recess to which the weft (Y) is introduced when the pair of rollers is brought into press-contact with the weft (Y) and supporting the weft sensor at a position where the weft sensor detects the weft (Y) introduced to the guide recess , the weft guide member includes a cloth fell side top portion having a top portion near a cloth fell and a let-off side top portion having a top portion near the warps (T) to be let-off, wherein the cloth fell side top portion and the let-off side top portion are located in a front side and a rear side of the guide recess , respectively, and the cloth fell side top portion is located above the weft withdrawing passage in a state before the pair of the rollers is brought into press-contact with the weft (Y). <EOS>