To enable the sure performance of the cutting of yarn end-treating yarn and the normal operation of a cutter.

In a loom having a cutter 10 which cuts yarn end-treating yarn 30 drawn out from a drawing apparatus 40 and descending toward the lower container 50, this cutting apparatus for yarn end-treating yarn installs the cutter 10 in such a state that it is apart from the descending path 31 of the yarn end-treating yarn 30, and has a moving mechanism which allows at least one of the yarn end-treating yarn 30 and the cutter 10 to move to relatively approaches to each other during cutting.