Phenylethanoid Glycoside Extract from Acanthus Ilicifolius L., Preparation Method thereof and Use as Anti-liver Injury Medicament

A phenylethanoid glycoside extract, wherein the phenylethanoid glycoside extract is prepared by a method comprising following steps:

• pulverizing dried whole plant Acanthus ilicifolius L. and passing through a 20-30 mesh sieve to obtain Acanthus ilicifolius L. powder, adding a 50%-95% ethanol solution whose mass is 8-20 times of the powder, soaking for 1-3 h and then extracting under reflux for 2-4 h, filtering and collecting an extract of the powder, and then extracting a filter residue under reflux for 1.5-2 h with 50%-95% ethanol solution whose mass is 8-10 times of the filter residue and collecting an extract of the filter residue, combining the extract of the powder and the extract of the filter residue, concentrating and subjecting to macroporous resin column chromatography, eluting successively by 10%, 30% and 50% ethanol solutions for four column volumes, respectively, collecting a fraction eluted by the 50% ethanol solution and drying to obtain the phenylethanoid glycoside extract, wherein the percentages of ethanol solutions are all volume percentages.