本文对不同产地和市售的二十四种厚朴药材及饮片的萃取液进行了高效液相色谱、气相色谱及紫外光谱分析;对所得数据用主成分分析进行分类,概括出不同样品化学成分的异同,认为大叶木兰可做为厚朴的代用品,而在陕西安康购得的样品不应做厚朴使用,后者经生药学鉴定为厚朴伪品凹叶木兰。化学模式识别技术可为寻找药材的代用品、评价中药质量及鉴定伪劣药材提供依据。 In this paper, twenty-four kinds of Magnolia officinalis from different areas and commercially available extracts were analyzed by high performance liquid chromatography, gas chromatography and UV spectroscopy; the data were classified by principal component analysis to summarize the chemical composition of different samples Similarities and differences, that Magnolia Magnolia can be used as a substitute for Magnolia, and purchased in Shaanxi Ankang Magnolia samples should not be used, the latter identified as Physarispalaxis Magnoliaceae. Chemical pattern recognition technology can provide the basis for finding the substitutes of medicinal herbs, evaluating the quality of traditional Chinese medicine and appraising inferior medicines.