Abstract: Based on the study of the pyrolysis (Rock-eval) parameters and their correlation with the organic carbon content in coal-bearing strata,the relationships among the pyrolysis parameters and organic carbon are analyzed.It is considered that the pyrolysis parameters and organic carbon content have the wider variation ranges,and there are some correlation among the different pyrolysis parameters.The positive correlation among S₁,S₂ and S₁+S₂ with the organic carbon could be used basically to evaluate the abundance of organic matter.The indexes of pyolysis type, S₂/S₃,hydrogen,oxygen and S₃ are obviously under the influence of the organic carbon,especially,the S₂/S₃ index,thus,the evaluation of the organic matter type is influenced also.The correlation given in this paper have certain reference value for the quantitative hydrocarbon-generated evaluation of source rocks in coal-bearing strata.