PURPOSE: To enable the sure penetration of an ultrathick yarn even when a sheet to be processed is moved in any direction by disposing a embroidery yarn-guiding member comprising a guiding hole and a guiding member near therefrom and inserting an embroidery needle with a thin yarn into a site of the guiding hole near the guiding member.

CONSTITUTION: A presser 3 which is repeatedly subjected to access to and separation from a processing sheet 2 spread in a holding frame and which presses the processing sheet 2 on the access is disposed. The presser 3 is provided with a guiding hole 10 through which both an embroidery needle 7 with a fine yarn 6 and an ultrathick yarn 9 are passed and further with a guiding member 12 guiding the ultrathick yarn 9 in proximity to the guiding hole 10. An embroidery yarn-guiding section 13 is composed of the guiding hole 10 and the guiding member 12 and the embroidery needle 7 is passed through a site of the guiding hole 10 near the guiding member 12.