Objectives: To establish a HPLC method to determine the content of ephedrine hydrochloride and pseudoephedrine hydrochloride in Fuganlin oral liquidMethods: The chromatog. conditions was as follows: Phenomenex Synergi Polar-RP column (250 mm × 4.6 mm, 4μm), methanol-0.092% phosphoric acid solution (containing 0.04% triethylamine and 0.02% di-n-butylamine) (1.5:98.5) as the mobile phase, flow rate being 1.0 mL · min-1, detection wavelength set as 210 nm.Results: The linear range of ephedrine hydrochloride and pseudoephedrine hydrochloride was 1-100μg · mL-1, and the average recovery (n = 6) was 97.43% (RSD = 0.80%) and 98.59% (RSD = 1.77%) resp.Conclusions: The method is simple, accurate and reliable, and can be used for the simultaneous determination of ephedrine hydrochloride and pseudoephedrine hydrochloride, which will provide a scientific basis for quality evaluation of Fuganlin oral liquid