To obtain an embroidery frame-holding device capable of arranging an embroidery frame in a state surely forming a constant space between the embroidery frame and the upper surface of a sewing machine head, even when a cylindrical processing cloth is set.

A holding tool 17 is connected to a driving piece 16A capable of being moved in the directions of X and Y, and each of a pair of right and left support members 21 is fixed to the holding tool 17 with a pair of front and rear fixing screws 22, 23. An embroidery frame 3 for holding a processing cloth is connected to the holding tool 17 in a state supported on the supporters 21. The rear fixing screw 23 is fit into a vertically long control groove 21A perforated in the support member 21 and having a constant length. Thereby, the support member 21 can vertically be rotated on the front fixing screw 22, and the fixing screws 22, 23 can be fastened to fix the support member 21 to a controlled position.