Objective: To investigate the constituents from the fruit dregs of Rhus chinensis. Methods: The constituents were isolated and purified by chromatography on silica gel,Sephadex LH-20,RP-C_(18) and Pre-TLC and recrystalization. The structures were identified on the basis of the chemical evidence, spectroscopic data. Results: Ten compounds were obtained and elucidated as m-digalloyl acid ( 1) , ethyl-m-digallate( 2) , apigenin( 3) ,kaempferol( 4) ,quercetin( 5) ,3,7 -dimethoxy-5,3 ',4'-trihydroxy-flavone( 6) ,quercitrin( 7) , kaempferol-3-O-α-L-...