Abstract:Objective:To design a macroporous resin chromatography system with on-line detector which can be used to purifytotal flavonoid glycosides from Hypericum perforatum.Method:Compared with the present detection methods,the ultraviolet detector which can be applied to flow liquid,and a self-made shunt were applied to design the on-line detection system.This system was successfully applied to purify the total flavonoid glycosides from H.perforatum.Result:This on-line detection system was simple and feasible,and the results were accurate and reliable.The purity of total flavonoid glycosides from H.perforatum.separated by this system was higher than 90%.Conclusion:This technique provides a simple and reliable on-line detection method for industrial chromatography purification of TCM extracts,which is the basis of automatic manufactory of TCM purification.