Objective To study the best extractive technique of Qiguihuaningxin granulae.Methods The index is astragalus root methyl glucoside mass of fraction.Using orthogonal design observation, extraction solvent,solvent concentration measurement,extractive time affect on astragalus root.Results The best extractive condition of Astragalus root is using 60% alcohol for three times.Extractive liquid is 5,4,3 times than Chinese medicine for each time.The extractive time is 2.0,1.5,1.5 hours.Conclusion The best extr...