Epilepsy is, in some occassions, manifested as one of the symptoms complex of central nervous system diseases, as well as systemic diseases such as metabolic disorders. In 1976, Bachman reported that 33% of epileptic patients manifested abnormal lesions in their computerized tomographic findings. 1005 epileptic children with various types of seizures have been investigated to detect the possible causes of epilepsies. 32% of the patients had abnormal brain C-T findings, of these patients, infantile spasm was the most frequently manifested abnormal C-T finding, rating 52.9%; simple partial seizure, 37.7%; complex partial seizure, 36.1% and generalized seizure, 27.1%, in order of frequency. Curable lesions, such as tumor, granuloma and arachnoid cyst were detected by brain C-T scan, and a brain tumor was detected in 2% of the patients. The brain C-T scan is one of the most effective diagnostic tools to evaluate the underlying lesions of the central nervous system of epileptic children.