OBJECTIVE：To optimize and improve the quality standards of Daziran wuhua yin. METHODS： TLC was used for the qualitative identification of Cichorii Herba， Glycyrrhizae Radix et Rhizoma and Gossampinus malabarica. HPLC was used for the contents determination of chlorogenic acid and tectoridin. The column was Diamonsil C18 with mobile phase of acetonitrile -0.4％ phosphoric acid （pH adjusted with to 2.05 with triethylamine） （10 ∶ 90，V/V， chlorogenic acid or 18 ∶ 82，V/V， tectoridin）  at a flow rate of 1 ml/min， the detection wavelength was 327 nm （chlorogenic acid） or 265 nm （tectoridin）， the column temperature was 25 ℃，and the injection volume was 10 μl. RESULTS： TLC of Cichorii Herba， Glycyrrhizae Radix et Rhizoma and G. malabarica showed clear spots and good separation. The linear range was 19.7-98.7 μg/ml for chlorogenic acid （r＝0.999 5） and 25.4-126.8 μg/ml for tectoridin（r＝0.999 8）； RSDs of precision， stability and reprosucibility tests were lower than 4％，average recoveries were 97.01％-104.98％（RSD＝3.64％，n＝9）、98.44％-104.58％（RSD＝1.84％，n＝9）. CONCLUSIONS： The optimized and improved standard is helpful for the quality control of Daziran wuhua yin.