A herbal extract, its preparation method and use

The invention relates the plant extractive and preparing method. The method comprises the following steps: making extract, using macroreticular resin adsorbing column chromatography to separate extract, getting rough extract, using polyamide column/silica gel column chromatography to separate, getting extract. The extract contains 22-90% propyl benzene glycosides active componen. The extract can be used to make oral administration agent, and uses as anodyne analgesic and haemostat. The invention has the advantages of many medicinal active ingredient and high quality. The propyl benzene glycosides content can be measured with liquid chromatography.