首次对中药淫羊藿中降压活性成分淫羊藿甙的ＨＭＱＣ和ＨＭＢＣ谱进行了深入研究．结合１Ｈ—１ＨＣＯＳＹ谱．确切归属了全部碳氢信号，并直接从ＨＭＢＣ谱上确认了异戊烯基，甲氧基，鼠李糖和葡萄糖在黄酮母核上的连接位置．并修正了文献中关于该化合物某些碳信号归属的错误．显示这两种２ＤＮＭＲ新技术对结构复杂的黄酮甙类化合物的结构研究具有重要意义． For the first time, the HMQC and HMBC spectra of the antihypertensive active ingredient Epimedium sagittatum in Herba Epimedii were studied in depth. Combined 1H-1 HCOSY spectrum. Exactly all the hydrocarbon signals were assigned, and the linking positions of isopentenyl, methoxy, rhamnose and glucose on the flavonoid nucleus were confirmed directly from the HMBC spectrum. And corrected the errors in the literature about the attribution of certain carbon signals of this compound. It is shown that these two new 2D NMR techniques are of great significance for the study of the structure of complex flavonoids.