The optimum extraction process for simultaneous extraction of galanthamine and lycorine from Lycoris Herb. was studied with orthogonal design, and the influences of ethanol volume fraction, temperature, ratio of extracted material to solvent and time were investigated. Optimum extraction conditions were determined as follows: 75% ethanol at 65℃ in 4 hours and the solid to liquid ratio 1 : 6 (g/mL), extracting for three times. The extraction rates of total galanthamin...