Catatonia is a neuropsychiatric syndrome that can occur in schizophrenia, major depression and general medical condition. It presents with decrease in psychomotor activity or increase in motor symptoms or a change in motor activity in time. It is known that acute catatonia and malign catatonia responds to benzodiazepine treatment to a great extent. Here, we report a case of acute and malign catatonia which did not respond to benzodiazepine treatment and treated successfully with electroconvulsive treatment. As we know, there are many case reports and studies about catatonia in our country, but our case is the first case which is resistant to benzodiazepine treatment although it has an acute beginning, we think that our case has a clinical importance in this aspect.