Arnold-Chiari malformation (ACM) is a congenital defect and some of the cases are accompanied by syringomyelia. There are four types of the malformation, type 1 being the most common in adults. Diagnosis of the malformation is usually difficult and therefore delayed. In this case report, we present our experience of anesthesia in a 4-year-old patient with ACM Type I with syringomyelia.