The utility model discloses a small -size cashmere yarn dyeing groove, including cell body and supporting leg, cell body top one side is fixed with a set of U type fixing base, first wire winding rodhas been placed on the U type fixing base, the fixed driving motor that is provided with on the tripod, a driving motor output shaft fixedly connected with U type connecting seat, second wire windingrod has still been placed on the 2nd U type fixing base, second wire winding rod is close to a driving motor one end and inserts in the U type connecting seat, and it carries out fixed connection to run through both through the fixed pin axle between second wire winding rod and the U type connecting seat, cell body bottom surface four corners still distributes and has the stirring rake, inside still distribution of cell body has one row of dyeing rod, set up corresponding bar spout on the inner wall of cell body both sides, dyeing rod both ends difference sliding connection is in correspondingbar spout. The utility model provides a present small -size cashmere yarn dyeing groove can not to adjust when dyeing as required long, the problem of dyeing inequality simultaneously.