Abstract: In order to ensure normal operation of the biogas engineering in the alpine regions of northern of China in winter, it is a key factor to keep the stable temperature in the biogas anaerobic fermentation process by means of measurements of proper heating and warming preservation. Thermal consumption of heat transfer in the anaerobic fermentation reactor is the basis for the design of fermentation liquid heating system. It has obvious effect on the selection of heating scheme and determination of major equipments, such as heating system, diameter of heating pipes and heater. Basic on steady state heat transfer theory, a one-dimensional steady heat transfer model was developed by the heat transfer analysis for an integral and overground collection of anaerobic fermentation reactor and methane. This model was modified and validated. The results show that there is no significant difference between the simulation value and the actual value. Therefore, the heat transfer model is feasible for the calculation of thermal consumption of rector. This model can be used for the calculation of heat load and prediction of energy consumption for the anaerobic fermentation reactor.