根据山西煤田实际资料 ,建立了推算山西煤盆地最高古地温的数学模式 ,探讨了区内热演化史 ,提出了山西煤盆地于成煤期后 ,曾有两次大的热演化过程 ,一为印支期 ,主要是快速沉降堆积增温阶段 ;一为燕山期 ,主要表现为岩浆区域热叠加增温现象 ,煤层气相应出现两个生成高峰期 According to the actual data of Shanxi coalfield, a mathematical model for calculating the highest palaeogeothermal in Shanxi coal basin was set up, and the history of thermal evolution in the area was discussed. After the coal formation period in Shanxi coalfield, there were two large thermal evolution processes, Mainly rapid subsidence accumulation and warming phase; one is Yanshanian period, which is mainly manifested as the phenomenon of superimposed warming of magmatic region and two generation of peak corresponding to CBM