An endoscopy auxiliary device (1) includes an insertion tube (10) and a clamper (12). The clamper (12) has a pipe (120) and a connector (122). The connector (122) is connected to the insertion tube (10). The pipe (120) is configured to clamp a capsule endoscopy (2). The pipe (120) has an inner space (1201) configured to accommodate a part of the capsule endoscopy (2). The pipe (120) includes a first slit (1203), a second slit (1205) and a third slit (1207). The first slit (1203) extends from a free end (E1) of the pipe (120) for a first distance (D1) toward a connection end (E2) of the pipe (120). The second slit (1205) extends from the free end (E1) of the pipe (120) for a second distance (D2) toward the connection end (E2) of the pipe (120). The third slit (1207) extends from the free end (E1) of the pipe (120) for a third distance (D3) toward the connection end (E2) of the pipe (120). The first slit (1203), the second slit (1205) and the third slit (1207) are separated from each other.
