///By means of single cold trap pyrolysis chromatography, the pyrolysis analyses of source rock samples have been carried out. Combining electromagnetic cutting with cold trap enrichment, the hydrocarbon components of source rock during different mature stages have been analyzed with pyrolysis chromatography, and gaseous hydrocarbon has been separated well, providing technical supports for dynamic studies of source rock components. The dynamic analyses of hydrocarbon pyrolysis component in source rock provide data including C₁(dry gas), C₂-C₄(wet gas), C₅-C₁₄ (light oil) and C₁₅+(black oil), offering important parameters for source rock quantitative evaluation, oil and gas major generation stage determination as well as the calculation of oil/gas ratio and total resource.