The study of the contents of chlorogenic acid and total flavonoids in different organs of sweet potatoes was significant for the further development of the plant resources of them. The present research adopts the acid ethanol refluxing method to extract the chlorogenic acid, the Alkali ethanol refluxing method extracting the total flavonoids, the spectrophotography measuring its quantity. The result showed that the contents of chlorogenic acid was more than that of total flavonoids in the different organs of sweet potatoes , and the contents of chlorogenic acid and total flavonoids in stems and leaves are more than in root tubers.%研究甘薯不同器官绿原酸和总黄酮含量，对进一步开发甘薯植物资源具有重要意义。采用酸乙醇回流法提取绿原酸，碱乙醇回流法提取总黄酮，分光光度法测定其含量。结果显示甘薯不同器官中绿原酸含量高于总黄酮含量，茎和叶中绿原酸和总黄酮含量均多于块根。
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