AIM: To establish the method for determing effective components of notoginsenoside in Compound Danshen Tablets(Radix et Rhizoma Salviae miltiorrhizae,Radix et Rhizoma Notoginseng,Borneolum Syntheticum) by RP-HPLC. METHODS: The contents of notoginsenoside R_1,ginsenoside Rg_1,ginsenoside Re and ginsenoside Rb_1 were simultaneously determined by an HPLC system with Kromasil C_(18)(5 ?m,250 mm?4.60 mm),the mobile phase was CH_3CN-0.05%H_3PO_4(CH_3CN 0-12 min:22%;12-20 min:22%-28%;20-60 min:28%-43%).The flow rate was 1 mL/min.The detection wavelength was set at 203 nm. RESULTS: The linear ranges of notoginsenoside R_1,ginsenoside Rg_1,ginsenoside Re and ginsenoside Rb_1 were 0.326-3.260 ?g(r=(0.999 7),) 0.890-8.900 ?g(r=0.999 8),0.144-1.440 ?g(r=0.999 6),0.940-9.400 ?g(r=0.999 8),respectively.Their average recoveries(n=6) were 99.08%,98.36%,97.54% and 96.07%,corresponding RSD were 4.41%,1.64%,2.77% and 1.12%,respectgively. CONCLUSION: The results indicate that the HPLC method is simple,accurate,highly selective and reproducible,thus it could be used as quality control in the preparation of Compound Danshen Tablets.