Abstract: This paper discusses the thermal problem existed in the process of alternating transportation of cold and hot crude oil. The two-dimensional heat transfer model is established, in which the semi-infinite zone of soil is converted into finite orthogom zone to discretely resolve with the finite difference method. This method is used to calculate the actual data (higher and lower pour point crudes) of a crude oil pipeline. The analysis shows that the calculation results of oil inlet temperature are basically lower than the measured data, which is safe to the pipeline operation.