Abstract: The numerical method is suggested in the paper, by which the correction coefficient on pump behavior caused by oil viscosity can be dynamically searched and characteristic curve can be automatically converted. The optimization analysis, including the oil viscosity influence on the pump, is performed on oil running scheme of pipeline. The comparison on the operation economy is made for two transport techniques-pumping-first and heating-first. The results show that the method outlined has excellent numerical precision and is particularly useful in practice engineering activity. They also show that the influence of oil viscosity to pump efficiency is much bigger than pumping capacity and pumping pressure. Adopting pumping-first process, without considering the influence of oil viscosity, the power cost and overall transport cost respectively increase 10% and 4%, which indicates that the oil viscosity influence of pump can not ignore in the optimization analysis. This process can eliminate the viscosity influence of pump to a great extent.