A cable tie for fixing a bundle of cables and the bound cables to a wall, includes: a fastening part having locking protrusions formed in the longitudinal direction of one surface thereof; a head part, which is integrally formed at the end portion of the fastening part, has an insertion hole, through which a free end of the fastening part passes, penetratingly formed in the center of the front surface thereof, and has a locking step formed at a lower part in the insertion hole so that the locking protrusion of the fastening part is fixed thereto; a connecting part integrally extending from the circumferential surface of the head part; and a bolt fastening part, which is formed at the front end portion of the connecting part.