To provide a reed for an air injection type weaving machine, with which the reflection direction of injected air from a subnozzle at an upper corner part of the inner part side is stabilized, dispersion of air flow at every nozzle at a weft guide channel is eliminated and weft running is stabilized.

This reed for an air injection type weaving machine having the weft guide channel (8) opened in a U-shape at the fabric side is characterized in that the weft guide channel (8) is provided with an upper wall surface (10) and an inner wall surface (9) in a planar state, respectively, an upper angular surface (12) of the inner part side connecting the upper wall surface (10) to the inner wall surface (9) has a first circular arc surface (16) crossing both the wall surfaces (9 and 10) at ≥0° crossing angles, respectively and a crossing angle (θ1) of the first circular arc surface (16) to the upper wall surface (10) is different from a crossing angle (θ2) of the first circular arc surface (16) to the inner wall surface (9).