The present invention relates to an applicator apparatus for dyeing and finishing in which diagonal application grooves are formed in a longitudinal direction in an outer circumferential surface of a roller used to apply a chemical and reverse diagonal application grooves are formed to intersect the formed diagonal application grooves to allow the chemical to be evenly discharged to an outer circumferential surface of a pickup roller so that fabric dyeing efficiency is increased. The applicator apparatus for dyeing and finishing includes a storage tank (100) in which a chemical is accommodated, a guide roller (200) configured to guide a fabric (f) to be conveyed, a first pickup roller (300) which is installed at an upper portion of one side of the storage tank (100) and has an outer circumferential surface coming in contact with a surface of the fabric (f) being conveyed along the guide roller (200) and a lower portion dipped in the chemical accommodated in the storage tank (100) so that the chemical is attached to the outer circumferential surface and conveyed due to forward rotation of the first pickup roller (300), and an application roller (400) which is installed at an upper side of the first pickup roller (300), rotates in a reverse direction, and has diagonal application grooves (410) formed along an outer circumferential surface and reverse diagonal application grooves (420) formed to intersect the formed diagonal application grooves (410) so that the chemical conveyed along the first pickup roller (300) enters and passes through the formed diagonal application grooves (410) and reverse diagonal application grooves (420) and is guided to be evenly discharged to the outer circumferential surface of the first pickup roller (300) and applied to the fabric (f).