Abstract: After closed thermal simulation experiments of source rocks in Huangqiao area,a series of samples with different maturity were obtained,the geochemical characteristics of liquid products were analyzed.Open thermal simulation experiments were carried out with extracted and no-extracted samples to explore the dynamics characteristics of hydrocarbon regeneration.With the increased temperature of thermal simulation experiments,the distribution of activation energy of hydrocarbon regeneration gradually moves backward,and the whole activation energy increase.Because primary products remained in no-extracted samples,their initial temperatures of hydrocarbon regeneration are below that of the extracted samples.In no-extracted samples residual hydrocarbon cracked again in the heating process,so they have a small separate peak between 36kcal/moL to 50kcal/moL,and the extracted samples have not.The simulation of hydrocarbon generation history of Dalong formation in Xi1 well shows that the source rocks have a great potential of hydrocarbon regeneration.