The main components of achene are carbohydrate, protein, fat, crude fiber, riboflavin, nicotinic acid, vitamin C, hydroxycitric acid and so on. HCA can inhibit the formation of fat, thus achieving the effect of losing weight. Achene is rich in vitamin resources It contains sugar, vitamin B 1, vitamin B2, vitamin C, vitamin P, carotene, potassium, phosphorus, citric acid and so on. The main components are naringin and neohesperidin. Pomelo core contains fatty oil, phellodendron amurense, phellodendron lactone and so on.