Scutellarin in Dengzhan Huasu tablets was determinedHPLC was used, column: DS-C18 mobile phase: methanol-tetrahydrofuran-0.3% phosphoric acid (12:13:75), wave length: 335 nm.The linear range was 10-100 μg/mL (r = 0.9999), recovery rate was 99.49%, RSD = 1.13%.The method is rapid, simple, and accurate.