Multistage countercurrent extraction(MCE) technique for extraction of glycyrrhizic acid(GA) from glycyrrhiza uralensis Fisch was studied in this paper.The effects of countercurrent extraction stages,temperature,extraction time and ratio of water/licorice on glycyrrhizic acid percentage extraction,which is defined as the ratio of mass of glycyrrhizic acid(GA) in the extracted solution and mass of licorice root,were investigated.The appropriate MCE conditions were obtained from the orthogonal test.The percent...