Abstract: Measurement of root, stem, leaves, flowers, hull, flour of the buckwheat. It was result that the buckwheat root contentwas 0.51%, the stem 1.25%, and the leaves 5.39%, The flowers 6.28, the grains 2.13%, the hull 1.06%, and the powder 2.31%.High performance liquid chromatography (HPLC) was used to determine the rutin of the organs. The sample was analyzed ona C18 column with methanol water (0.45% H3PO4)(55:45) and assayed by 260nm UV detector. The highest rutin content ofbuckwheat was in its every Organs。

Key words: Fagopyrum tararium Gaertn, flavones, rutin, HPLC