Inhaled anaesthetics can replace intravenous anaesthesia in modified electroconvulsive therapy （MECT） for patients with severe mental disorders who refuse intravenous anaesthesia， are too agitated to undergo intravenous anaesthesia， or are unsuitable for intravenous anaesthesia in pregnant women. Sevoflurane and isoflurane can also act independently as an antidepressant for therapeutic purposes. This paper aims to reviews the research progress of inhaled anaesthetics， such as sevoflurane， enflurane and isoflurane in MECT， exploring the application of inhaled anesthetics in psychiatric clinical practice.