Take Notoginseng Radix, pulverize it into coarse powder, soak it in 60% ethanol for 24 hours according to the percolation method under fluid extract and extract (Appendix I O), then percolate 5-8 ml per kilogram of medicinal materials per minute, collect percolate for 6 times, concentrate, dissolve the residue in water, filter, pass the filtrate through macroporous adsorption resin column, elute with appropriate amount of water, discard the aqueous solution, and filter.