A suture device according to the present invention includes: an elongated shaft member extending along a longitudinal axis； a pair of gripping members (11, 12) provided at a distal end of the elongated shaft member in a pivotable manner about a pivot (10a) orthogonal to the longitudinal axis so as to be opened and closed relative to each other； and a passing mechanism (15) which passes a suture needle (3) between the gripping members (11, 12), in which the gripping members (11, 12) include: fitting hole portions (11a, 12a) which are formed along an opening-closing direction of the gripping members (11, 12), and to which the suture needle (3) is detachably fitted； and contact portions (30, 31) which are brought into contact with front and back surfaces of a suture object in a course of a closing action of the gripping members (11, 12) so as to suppress a movement of the suture object along the front surface of the suture object.
