Abstract: The throughput of products increases in FuShun Petrochemical Company, which obviously limits the transportation capacity of Fushun-Bayuquan Products Pipeline. However, injecting EP DRA can reduce the friction drag of the pipeline to increase throughput. In experiment, the flow rate is kept constant, the rotation speed of pump is decreased through the frequency conversion, and finally the new working condition point is got by crossing the characteristic curves of the pipeline and pump. Through analyzing the pump and pipeline characteristic curves before and after injecting DRA, the effectiveness in energy saving and throughput increase by means of EP DRA injecting can be qualitatively displayed. Results from the actual running parameters before and after injecting DRA quantificationally show the effectiveness in energy saving and throughput increase by means of EP DRA injecting.