In this survey, 67 samples, including Sheau-Qing-Long-Tang, Ger-Gen-Tang, Dwu-Hwo-Jih-Sheng-Tang and Jia-Wei-Shiao-Yau Saan preparations, were purchased from pharmaceutical plants from Feb. to Apr. 2007. Based on the registered specifications, HPLC method was applied to determine the marker constituents in these preparations. The results indicated that eighteen samples were out of specifications (26.9%).