Abstract: The on-stream period of the Wei-Jing Oil Pipeline is rather long, the flux of the pipeline and the physical property of the crude oil are greatly changed. The pour point depressant is repetitively appended in the crude oil by Nanyang Oilfield and the oil transportation company, the freezing point of the crude oil is being lowered, the pull-in temperature of the intermediate station is prevalently on the high side, the course power waste is rather big. In the paper, the thermal equilibrium method is applied for measuring the overall heat transfer coefficient of the Wei-Jing Oil Pipeline, via the locale surveying work of one year duration, the all-year average overall heat transfer coefficient of the Wei-Jing Oil Pipeline is 1.86 W/(m²·℃). Based on the overall heat transfer coefficient measurement results of the Wei-Jing Oil Pipeline and the fact in PPD treatment, the thermal and hydraulic calculation are made. The analyses indicate that the process program of the pipeline for temperature drop transportation is absolutely feasible.