Abstract: A cable fixator includes: a first member formed in a cylindrical shape with a through hole inside; a protrusion formed on one side of the first member and inserted in the through tube after the first screw thread provided; a first fastener formed in a ring shape and combined with the protrusion by the combining grooves; a second screw thread formed on the inner side of the first member; a second member formed in a cylindrical shape and inserted into the inside of the first member; a second fastener formed on one side of the second member; a third screw thread formed on the outside of the second member and combined with the second screw thread; a sealing member consisting of a soft material; a sealing groove formed on the outer surface of the sealing member and provided with grooves toward the inside of the sealing member.