Abstract: The study collected phytoncidere from living leaves and branches of 5 forest health species:Cupressus funebris, Pinus massoniana, Cryptomeria fortune, Cinnamomum septentrionale and Pleioblastus amarus in Sichuan, and analyzed the chemical components and their relative content in the phytoncidere by gas chromatography-mass spectrometry (GC/MS). The results showed that six kinds of VOCS, terpenes, alcohols, esters, aldehydes, ketones and alkanes were the main components of phytoncidere in the living branches and leaves of 5 forest health species. The main components released from living branches and leaves of Cupressus funebris, Pinus massoniana, Cryptomeria fortune and Cinnamomum septentrionale were monoterpenes and sesquiterpenes, whose contents were more than 60%, which had stronger physiological function. The contents of alkane and α-pinene in terpene in the living branches and leaves of Pleioblastus amarus were the highest.