Pediatric syringomyelia is formed by excessive accumulation of abdominal fluid into the sphincter through the unclosed syringomyelia. Depending on the location of the unclosed syringomyelia and fluid accumulation, there are two types of syringomyelia: spermatic syringomyelia and testicular syringomyelia. Syringomyelia can be seen in all age groups of children, the majority of whom are boys, while girls occasionally have syringomyelia. It is called Muck’s cyst. Since the syringomyelia can continue to occlude after birth and the lymphatic system of the sphincter tends to mature, a small amount of fluid can be gradually absorbed on its own, so pediatric syringomyelia has the potential to heal on its own. The younger the child is, the less fluid there is and the higher the rate of self-healing. Children older than 1 year of age are less likely to heal on their own and often require surgical treatment. Pediatric syringomyelia often presents as a lump in the groin or on one or both sides of the scrotum that grows slowly and does not cause pain. If the unclosed syringomyelia is of thicker caliber, the mass shrinks in the morning after lying flat overnight. The mass is cystic in nature, with a positive transillumination test, clear borders and no obvious continuity with the abdominal cavity. Tension of the mass may be reduced after extrusion, but there is no significant volume reduction. In spermatic sphincter effusion, the mass is located in the spermatic cord and is smaller in size and oval in shape, and the testes can be retrieved under the mass. Ultrasound examination shows a cystic mass. It can be differentiated from other intra-scrotal masses (testicular tumor, incarcerated hernia). If the amount of fluid in a pediatric syringomyelia is large and the tension is very high, it may affect the blood circulation of the testis and impair the function of the testis, so high ligation of the sphincter is recommended. If the child is young, has a short course of disease, has a small amount of fluid and low tension, he can be observed and followed up until it subsides on its own. Observe until about 1 year of age, and treat if it does not heal. The prognosis for pediatric syringomyelia after surgery is good. In adults, syringomyelia is often caused by trauma or infection and has a different pathogenesis than pediatric syringomyelia, and the surgical approach is not the same.