A method for extraction of catechins and a drink including catechins are disclosed. The method comprises: freezing tea leaves at a first predetermined temperature mincing the freezed tea leaves mixing the minced tea leaves with appropriate amount of water to obtain a tea liquid adjusting a PH value of the tea liquid into a predetermined PH value range adding lytic enzymes into the tea liquid with the adjusted PH value to proceed a fermentation process at a second predetermined temperature and filtering the fermented tea liquid to obtain an extract fluid.本發明係揭露一種兒茶素之萃取方法及含兒茶素之飲料。該方法包含:將茶菁於第一預定溫度下冷凍後;將冷凍過之茶菁切碎;將切碎之茶菁與適當的水混合以獲得茶液;調整茶液之PH值至一預定PH值範圍;將分解酵素置於調整過PH值之茶液中,於第二預定溫度下進行發酵處理;以及過濾經發酵處理過之茶液以獲得萃取液。101-111‧‧‧步驟
