Soil temperature field changed periodically during seasons. During the long distance hot oil pipeline operation period, the pipeline operating properties would change under different soil temperature field. When setting the outlet oil temperature, Newtonian fluid, nonnewtonian fluid length and inlet oil temperature would change with different oil temperature. By aimulating the interactive temperature field between hot oil pipeline and soil temperature field how heat transfer from oil pipeline to soil was analyzed. By setting up mathematical model the change of hot oil fluid state and inlet oil temperature under different soil temperature fields was analyzed. According to the calculation results, the piping system operation conditions to realize the whole optimization could adjusted, this could also provide theoretical basis for oil transportation scheme.