Corydalis yanhusuo . Wang alkaloids are mainly divided into three categories: Protoberberine, prototropine and aporphine alkaloids. Therefore, we have taken into account these three alkaloid contents when extracting and purifying crude drugs, which is essential for the quality control of C. yanhusuo and its derivative products. | Optimization of the extraction and purification of Corydalis yanhusuo . Wang based on the Q-marker uniform design method