The present invention provides an endoscopic clip device and a clip in which a connection operation between a clip and an operation wire is facilitated, and in which a procedure can be quickly performed by reducing an exchange frequency of a treatment instrument body. An endoscopic clip device (100) according to the present invention includes a clip (110) that has a plurality of arms (120) for gripping a living body tissue and a locking portion (130), and a treatment instrument body that comprises an elongated sheath (10) and an operation wire (20) in which a chunky distal connection portion (50) is disposed in a distal end. In a state where the distal connection portion (50) is accommodated in an accommodation portion (134), the operation wire (20) is drawn to a proximal side in a forward/backward movement direction so that the arms (120) are closed to grip the living body tissue. In a state where the arms (120) are closed, the operation wire (20) is further drawn to the proximal side so that the distal connection portion (50) causes a protruding portion (140) to be deformed outward and the accommodation portion (134) is opened. In this manner, the distal connection portion (50) is drawable from the accommodation portion (134).
