中文摘要：

术数之学，古今皆奥，其根源于《周易》，合“道”之精神。“三”为生生之基数，万物源于“一”，万化分于“三”，万物由“三”而见繁荣，万事由“三”而见繁复。“三”味对药之运用，滥觞于仲景，发挥于各家，或从三焦治，或从源流止，或连横，或合纵，务求精准恰当，吻合病机。

英文摘要：

The art of Shushu,which is rooted in Zhouyi and in accordance with the Dao, is very difficult and mystery since ancient times. ＂Three＂ is considered as the symbol of the life and reproduction in the art of Shushu. Ancient people believe that ＂one＂ is the whole root of all things and ＂three＂ is the root of the whole changes. ＂Three＂ means prosperity and complexity. The application of Shushu ＂three＂ in Chinese herbal medicine in pairs ,which is originated from Zhongjing,has been developed by the later generations＇ doctors, treating the diseases of Sanjiao, or from the source and flow, or from the connection and vertical integra- tion in order to match the pathogenesis.