Objective: The non-convulsive status epilepticus (NCSE) is easy misdiagnosed due to its complex etiology, clinical manifestations. It is more difficult to diagnose and treat for elderly patients with multiple basic diseases. The purpose of this study is to investigate the clinical characteristics of elderly patients with NCSE, therapy, diagnosis, and the value of long-range video electroencephalography (LV-EEG). Methods: The clinical and electroencephalography (EEG) data of the five elderly patients with NCSE in my hospital were analyzed retrospectively.Results: Five patients showed episodes of abnormal behavior during seizure (5/5). There were 3 patients with previous history of epilepsy after cerebral infarction (3/5), 1 patient diagnosed intracranial infection because of NCSE episodes to consultation (1/5), and 1 case with previous history of epilepsy (1/5). The V-EEG of the 5 patients showed persistent epileptic form discharges during seizure. Intravenous diazepam had good effect to the 5 patients during seizure. Seizure of the 5 cases was controlled acceptably with different antiepileptic drugs according to different epilepsy forms.Conclusions: The abnormal mind and behavior is still main performance in elderly patients with NCSE. The LV-EEG provides reliable foundation for diagnosis of the disease. The rational use of antiepileptic drugs is effective. Intravenous diazepam slow for elderly patients with NCSE is applied as well.