对间接法预测煤层气（甲烷）含量有关的煤层气在煤中赋存状态、煤层气在煤中吸附模型及其相互之间的联系、煤层中游离煤层气及其含量相关计算所需的参数进行了分析讨论，并提出了相应的建议。

Some dispute problems about the content of coal bed gas (methane) predicted by indirect method, including the existing status of the methane, the adsorption isotherm models for coal bed gas and their relationships, the free methane state in coal seam and the parameters for its capacity calculation, were discussed and analysed .The corresponding suggestions for these problems were also put forward.