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Monitoring of anticonvulsant, EEG-video-monitoring, amytal test, anesthesia and microsurgical techniques have been developed. Surgery of intractable epilepsy is evaluated as an effective treatment, if the indication is strictly determined. Adequate surgical procedures should be chosen from various methods. A lesionectomy is simply to remove brain tumors, cortical scars after the cerebral injury or inflammation, or arteriovenous malformations. Temporal lobectomy is done to temporal epilepsy. Although there are anterior temporal lobectomy, standard one, tailored one, and selective amygdalohippocampectomy, we use usually tailored one. Hemispherectomy is effective to intractable epilepsy caused by infantile cerebral paralysis. The callosotomy is indicated to intractable epipepsies propaga ting broadly to bilateral sides, that is Lennox-Gastaut, Sturge-Weber, and Rasmussen syndromes. When epileptic focus is present in the functional areas such as motor, sensory, or speech centers, multiple subpial transection (MST) is chosen. Futhermore, surgical practices, their complications, and surgical results were described.