The Multi-stage Countercurrent Extraction (MCCE) technics of Traditional Chinese Medicine (TCM) such as Salvia Miltiorrhiza Bge, Notoginseng and Breviscapine were investigated. And the mechanism of MCCE process was preliminarily discussed. The aim of this study was to systematically clarify the applicability and superiority of MCCE in the field of TCM. The main works can be summarized as follows:1. The Multi-stage Countercurrent Extraction of Danshensu from Salvia Miltiorrhiza Bge was studied. The processin...