The main component of platycodon grandiflorum is saponin component, and the platycodon grandiflorum has the effects of relieving phlegm and relieving cough, opening throat and promoting lung qi. Its main activity is saponin. There are many methods for extracting platycodin, but the traditional method for extracting platycodon saponins has large consumption of flux, long production cycle and low product purity, which is difficult to meet the needs of modern production. Currently, ion adsorption is very popular.