Some of cerebral palsy patients are accompanied by mental retardation, convulsion, scoliosis and thoracic deformity. We experienced general anesthesia of a 22-year-old male with cerebral palsy accompanied by high degree mental retardation and scoliosis for dental caries therapy. We performed anesthetic management of this patient without any occurrence of anesthesia-related complications, though we had some difficulties in anesthetic induction and postural maintenance during the process. We recognized that considerable attention is needed for the patients with cerebral palsy to avoid undesirable anesthetic complications, especially ventilatory failure and neurologic sequelae.