The main feature of motor cortical epilepsy is simple partial seizures, which are localized based on which side the involvement is on and the local anatomy of the involved area. Involvement in the lower pre-Rolando area may have speech arrest, vocalization or speech disorders, with frequent tonic-clonic movements or swallowing movements and generalized seizures on the contralateral side. So how is motor cortical epilepsy diagnosed? 1. EEG: Because frontal lobe seizures often quickly cause bilateral frontal lobe synchronous issue, scalp EEG is difficult to localize and often difficult to interpret EEG changes due to artifacts. In frontal lobe epilepsy, the epileptogenic foci are often multifocal or bilateral, which also affects the accurate localization of frontal lobe epileptogenic foci. In this case, video EEG should be performed to observe the EEG changes during seizures and behavioral changes of seizures to help localization. It is one of the main tools for preoperative evaluation of patients with intractable epilepsy. 2. Imaging examination: structural and functional imaging methods are applied for localization. CT and MRI can detect some small low-grade gliomas, AVMs, cavernous hemangiomas, and cortical dysplasia, as well as meningeal brain scar, brain atrophy, and cystic brain changes, which are beneficial to the localization of epileptogenic foci.