Abstract: An implant for correcting pectus excavatum is disclosed, which comprises a chest correction bar (30) inserted into a body for lifting a depressed sternum and costal cartilages, and a stabilizer (40) for being inserted into a distal end of the chest correction bar (30) to prevent the chest correction bar from being rotated inside the body, wherein the chest correction bar (30) is formed at both jagged distal ends thereof with recesses (33) each of a predetermined length along the lengthwise direction of the chest correction bar (30), and wherein the stabilizer (40) comprises: two fixing plates (41, 41?) for being fixed to the body of a patient; a bridge (42) connecting the two fixing plates (41, 41?); two protruders (43, 43?) each generally opposed from the fixing plates (41, 41?) so as to be hitched by the recesses (33) at the distal ends of the chest correction bar (30) inserted from under the bridge (42), where there are formed two spaces (C) each of a predetermined size between the two protuders (43, 43?)