To provide a method for discharging a weft in a shuttleless loom, with which an operation space of peripheral part of a cloth fell is widened and maintenance operation of the whole loom is facilitated.

This method for discharging a weft in the shuttleless loom comprises, during loom operation, seizing the weft 2 by an injection flow by a yarn end treatment apparatus 11 and discharging a cut end part which is then cut and left and, when the trouble of the weft occurs, pulling the troubled weft 14 by the injection flow by the yarn end treatment apparatus 11 and discharging the weft including the troubled parts by cutting.