ABSTRACT
Objective: To study the quality standard of Niaoduqing Tablet, a preparation of Chinese herbal medicine. Methods: Thin layer chromatography (TLC) was used for the identification of Radix et Rhizoma Rhei, Radix Polygoni Multiflori, Radix Sophorae Flavescentis, Radix Salviae Miltiorrhizae and Rhizoma Chuanxiong in Niaoduqing Tablet. TLC scanning was used for the determination of astragaloside IV and HPLC for determination of paeoniflorin in Niaoduqing Tablet. Results: TLC identification were highly specific. A good linearity for astragaloside IV was ranged 1.006～9.064?g and that for paeoniflorin was ranged 0.176～0.880?g. The average recovery of astragaloside IV was 97.69 %( RSD= 2.13 %) and that of paeoniflorin was 97.47 %( RSD=0.87 %). Conclusion: This method can be used for the standard of quality control of Niaoduqing Tablet.