Abstract: Abstract： Corydolis have a great number and wide distribution area, which contains a variety of alkaloids chemical components. Most of Corydcdis have the functions of heat-clearing and detoxifying, activating blood and dissolving stasis, dehumidifying and analgesic effect, which are widely applied in the field of medical care. The alkaloid chemical components in Corydalis were briefly introduced. The extraction and separation techniques of alkaloid in Corydalis were reviewed.