To maintain the depth of an excretion groove by the thickness of a material, not to deteriorate the thickness of an stoma, to alleviate the excretion function disorder from a stoma opening, to prevent a hernia generated around the stoma, and to enhance the exercising function for a stoma wearer.

A flange center pushing part 2 is arranged in a flange outer bailie and a center part of the same by fitting the same in an inside circle of a flange outer bailie hernia-preventing part 1, a cover 5 is coupled with a string 6, an opening part 3 is arranged in a flange center pushing part 2 made of a material having a thickness and flexibility, a releasing part 13 is arranged in the lower side of the inside circle of the flange outer bailie hernia-preventing part 1 made of a material having a thickness and flexibility, the opening part is covered with the cover 5, an abdominal belt 11 is wound, the excretion groove with the depth is formed by the thickness of the materials of the opening part 3 and the releasing part 13, the excretion function disorder from the stoma opening is alleviated, the excretion is stored in a pouch 9, the hernia around the stoma is prevented, and the exercising function is enhanced.