A suture device (1) which sutures tissue using a suture unit having a first anchor (106A, 106C) and a second anchor (106B) respectively attached to both ends of a suture thread (104), wherein a hollow distal member (4) is provided which houses said first anchor and second anchor, the end face of the distal side of said distal member is formed so as to constitute a first sharp angle with the axis of said distal member, the distal side of said second anchor is provided with a sloped face (109B) so as to constitute a second sharp angle with the axis of said second anchor which is an angle at or below said first sharp angle, and said first anchor and said second anchor are axially aligned and housed inside said distal member so that said second anchor is positioned on the proximal side.
