Based on the successful connection of HP1093 high efficiency liquid phase chromatograph with LS50 fluorescence spectrophotometer,the authors established a set of high efficiency liquid phase chromatographic analytical techniques for analyzing aromatic hydrocarbon components in oil and gas geochemical samples,thus greatly raising the selectivity and sensitivity of the test means.This set of techniques can not only solve the problem of qualitative and quantitative determination of aromatic hydrocarbon components but also improve the accuracy of oil and gas prognosis. What is more,it can play an important role in such aspects of organic geochemical researches as oil-oil comparison,oil-source comparison and characteristics of oil and gas migration.