Chromatographic fingerprint of Chinese herbal medicines is in reality a general characteristic of the concentration profiles of different chemical compounds extracted from Chinese herbal medicines. At present, it is a new challenge in pharmacology and analytical chemistry that how the multivariate methods, such as chemical pattern recognition developed recently in chemometrics, are used to analyze the fingerprints of Chinese herbal medicines quantitatively. In this article the method of pattern recognition is taken to analyze the extracts of Ginggo biloba quantitatively and satisfactory results are achieved.