Aim To provide evidence for quality evaluation of the crude drug,the fruits of Ligustrum lucidum.Methods Chemical pattern recognition was performed on the fruits of Ligustrum lucidum collected from various areas of China by PCA (principal component analysis) method.Results There were obvious differences of chemical components among the samples from various origins,and the chemical components would be also affected by processing.Coclusion Chemical pattern recognition by PCA can be used to the quality evaluat...