目的 :充分利用中药钩藤的植物资源 ,测定并比较大叶钩藤 Uncaria macrophylla Wall.的叶和钩茎中的表儿茶素含量。方法 :利用 RP- HPL C测定。结果 :钩藤钩茎中含表儿茶素 0 .38% ,叶中含 0 .82 %。结论 :大叶钩藤中含有较多的表儿茶素 ,叶中含量大于钩茎中含量 Objective : To make full use of the plant resources of Uncaria rhynchophylla and to determine and compare the epicatechin contents in the leaves and stalks of Uncaria macrophylla Wall. Method : Determination using RP-HPL C. RESULTS : The catechins in the vine stalks contained 0.38% of epigallocatechin and 0.78% in leaves. Conclusion: There are more epicatechins in the leaves of Uncaria macrophylla than in the stalks.