Abstract:Toona sinensis is still used as a kind of traditional Chinese medicinal herb, the ingredients of which are its leaves, roots and bark. The research of Toona sineasis has been changed from traditional cognition to the studies of its chemical component and mechanism of action with development of science and technology. The author summarizes the study on the chemical activation component of and volatile compound etc. of Toona sinensis, which has a certain reference role for its exploitation and utilization.