To rapidly detect different manufacturers and batches of Wai Yong Kui Yang San, Raman spectroscopy combined with principal component analysis (PCA) support vector machine (SVM) algorithm was used to classify and identify different manufacturers and batches of Wai Yong Kui Yang San The results show that although the difference of Raman spectra is very weak, it can not be directly classified and identified by naked eyes, but PCASVM algorithm can accurately classify and identify different manufacturers and batches of Wai Yong Kui Yang San, and the accuracy rate is 100% This method is rapid, accurate, nondestructive and simple, and has potential application value for classification, identification and quality control of different manufacturers and batches of Wai Yong Kui Yang San