A communicating syringomyelia, also known as congenital syringomyelia. It is caused by the sphincter remaining unclosed after birth, causing fluid in the abdominal cavity to communicate with the fluid in the syringomyelia, resulting in a syringomyelic effusion. The syringomyelia increases in size when standing or crying and shrinks when resting flat. During the descent of the testis from the abdominal cavity to the scrotum, there is an expansion of the peritoneum at the front (i.e., the sphincter). Normally, the sphincter is closed from the internal inguinal ring to the top of the scrotum, with only a small potential cavity surrounding the testicle. If an abnormal embryonic development causes the sphincter to remain closed after birth, a traffic syringomyelia develops. In children under 2 years of age, the syringomyelia may close on its own and the syringomyelia may absorb on its own. Children under 2 years of age who have traffic syringomyelia or who have clinical symptoms that affect their quality of life may require surgery, as well as children under 2 years of age who have a combined inguinal hernia or who have a large amount of fluid that does not resorb on its own. Traffic syringomyelia is mainly treated surgically. The principle of surgery is to block the downward flow of ascites by ligating the unclosed sphincter high at the internal ring. In the past, the patient’s groin incision was taken to be about 125 px long, the spermatic cord and sphincter were found, the sphincter was freed upward to the mouth of the internal ring, the sphincter was ligated, the spermatic capsule was removed, and the sheath of the overturned testis was excised, which is more damaging, takes longer to heal the incision, and is more painful postoperatively. The recovery time is long, and generally there will be scrotal redness and edema, and drainage strips need to be left in place, and the hospital stay is often more than a week. Postoperative scars are left in the groin area. Single-port, scarless laparoscopic sphincter ligation is a more rational procedure that uses laparoscopic surgery in the abdominal cavity to free the unclosed sphincter and ligate it at the internal loop for the etiology of unclosed sphincter in traffic-related syringomyelia. The incision scar is trapped inside the umbilicus and no scar can be seen after the surgery. It is truly minimally invasive and cosmetic. And the damage is small, the umbilical incision is small, no need to remove stitches after surgery, and the hospital stay can be controlled within 5 days.