The present invention related to a method for preparing flavonoids from Camelliaseed which have hypoglycemic, hypolipidemic and antihypertensive effect. The process is to extract the seed by reflux device first, and the extraction liquid will be freeze-dried. Then the obtained powder will be purified by semi-preparative HPLC and the eluent corresponding to the specific retention time will be collected. The collected eluent will be freeze-dried to obtain the non-catechin flavonoids powder.一種由茶屬種籽製備具有降血糖、降血脂、降血壓功效的類黃酮方法，其步驟是先將茶屬種籽利用迴流裝置進行萃取，萃取液經乾燥而得萃取粉末後，再將萃取粉末進行半製備式高效液相層析取特定滯留時間所對應的沖提液，所取沖提液經冷凍乾燥後即可得非兒茶素類之類黃酮粉末。
