A suture device including: an elongated shaft member extending along a longitudinal axis； a pair of gripping members provided at a distal end of the elongated shaft member in a pivotable manner about a pivot orthogonal to the longitudinal axis so as to be opened and closed relative to each other； and a passing mechanism which passes a suture needle between the gripping members, in which the gripping members include: fitting hole portions which are formed along an opening-closing direction of the gripping members, and to which the suture needle is detachably fitted； and contact portions 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 so as to suppress a movement of the suture object along the front surface of the suture object.
