To allow lock release work to be performed from the tip side of a band locking part.

A band lock member 10 comprises: a band 20 in which a plurality of locked parts 22 are installed in a longitudinal direction; a main body part 30 having a pair of band insertion pore parts 32 formed so that the band 20 can be inserted and penetrate in one direction; and a pair of band locking parts 40 which is formed in a shape extending toward one side of the penetration direction of the band insertion pore parts 32, includes locking protrusion parts 42 capable of performing locking by contacting with the locked parts 22 from the other side of the penetration direction of the band insertion pore parts 32, and can switch its posture between a lock posture in which intrusion of the locking protrusion parts 42 into the band insertion pore parts 32 makes it possible to selectively lock the plurality of locked parts 22 and a non-lock posture in which the locking protrusion parts 42 are retracted from the band insertion pore parts 32, where the band locking parts 40 include lock release pressing parts 46 capable of being pressed from the one side of the penetration direction of the band insertion pore parts 32 from the lock posture side to the non-lock posture side.