OBJECTIVE To establish an HPLC specific fingerprint of different processed products of Semen Plantaginis and to provide the basis of the research for quality evaluation and processing mechanism.METHODS HPLC/UV fingerprints was adopted,the fingerprint characteristics of methanol extract of Semen Plantaginis raw product,stir-fried product,salt main product and wine products of ethanol extract were studied by the use of traditional Chinese medicine fingerprint similarity evaluation and sample cluster analysis ...