Tengcha is one of the special plants of China for beverage or medicine use, which enriches of flavones. Much attention about the Tengcha focused on the identification of active components and its' antioxidant, antibacterial, hypoglycemic effects, et al. The studies of this article were as follow: Conditions and parameters for extracting of flavones, dihydromyricetin(DHM) of Ampelopsis grossedentata and its activities; The contents of flavones, DHM, activities from different materials; The conditions ...