OBJECTIVE： To develop a method for simultaneous determination of tenacissoside A and tenacissoside I in Xiaoaiping tablets. METHODS： HPLC method was used to analyze Xiaoaiping tablets after extracted by trichlormethane. The determination was performed in Symmetry C18 column with mobile phase consisted of acetonitrile-0.1％ phosphoric acid solution （gradient elution） at the flow rate of 1.0 mL/min. The detection wavelength was set at 223 nm， and the column temperature was 25 ℃. The sample size was 20 μL. The content of tenacissoside A and tenacissoside I in 3 batches of samples were determined by above condition. RESULTS： The linear range of tenacissoside A and tenacissoside I were 26.40-264.00 μg/mL （r＝0.999 4） and 4.59-45.90 μg/mL （r＝0.999 3）， respectively. The limits of detection were 0.26， 0.12 μg/mL， and the limits of quantification were 0.79， 0.36 μg/mL. RSDs of precision， stability （12 h） and repeatability tests were all lower than 2.0％（n＝6）. The recoveries were 98.53％-99.28％ （RSD＝0.20％-0.51％，n＝9） and 97.00％-98.89％ （RSD＝0.19％-1.03％，n＝9）. The contents of tenacissoside A and tenacissoside I in 3 batches of samples were 2.27-2.32 mg/g and 0.64-0.69 mg/g， respectively. CONCLUSIONS： The established method is accurate， simple and reliable， which is suitable for simultaneous determination of tenacissoside A and tenacissoside I in Xiaoaiping tablets.