Abstract: Schisandra red pigment was extracted with acid ethanol （pH=3） extraction method, by which the effects of three extraction factors including extraction temperature, time and the ratio of material to extraction solvent on the rate of extraction were studied. With the extracting rate of Schisandra red pigment as main indicator, the extracting process was studied by orthogonal test to optimize the acid ethanol （pH=3） extraction method. The optimum extracting procedure of Schisandra red pigment was extracted with ethanol 5fouldvolume of acid as extracting agent for 2 h at 75 ℃. Schisandra red pigment was identified to be indole pigment through FTIR spectra.

Key words: Schisandra red pigment, extracting, FTIR spectra, orthogonal test