Hawthorn is rich in chlorogenic acid, caffeic acid, crataegolic acid, oleanolic acid, quercetin, ursolic acid, oleanolic acid, hyperin, epicatechin Jing (epicatechin) and so on. The main components of hawthorn extract are flavonoids. At present, there are more than 30 kinds of flavonoids isolated from hawthorn, mainly including flavonoid glycosides containing carbon bonds, flavonols and their glycosides, dioxyflavone glycosides, and polymerized flavonoids. kind. Another important component is triterpenoids. In addition, hawthorn contains organic acids such as chlorogenic acid, caffeic acid and tannins, tannic anhydride, epicatechin, choline, acetylcholine, β-sitosterol, and carotene. And a lot of Vit C and so on.