Abstract: To study the chemical constituents of Stachys kouyangensis (Vaniot) Dunn collected in Fumin County, Yunnan Province, 70% acetone aqueous extract of the aerial parts of. S. kouyangensis were separated and purified by chromatography methods. As a result, eleven compounds were isolated and determined by spectroscopic analysis to be: 6−hydroxystigmast−4−en−3−one ( 1 ), stigmast−4,22−dien−3−one ( 2 ), β−sitosterin ( 3 ), S−(+)−dehydrovomifoliol ( 4 ), loliolide ( 5 ), phytol ( 6 ), angophorol ( 7 ), trans−caffeic acid ( 8 ), syringic acid ( 9 ), salicylic acid ( 10 ), dodecanoic acid ( 11 ), respectively. All compounds were obtained from S. kouyangensis for the first time, and compounds 1 , 2 , 4 , 5 , and 7 were the first isolates from the genus Stachys.