In order to assess the quality of the concentrated traditional Chinese medicinal preparations, a continuous investigation plan has been implemented since 2007. In 2009, 59 samples, including Liu-Wei-Di-Huang-Wan, Huang-Lian-Jie-Du-Wan, Zhi-Bo-Di-Huang-Wan and Qi-Ju-Di-Huang-Wan, were purchased from pharmaceutical manufacturers from Feb. to Apr. 2009. Based on the registered specifications, HPLC method was applied to determine the marker constituents in these preparations. The results indicated that 14 samples were out of specifications. That will provide as a reference of the administration.