Abstract: As the actual flow rate is only 60. 8% of design flow rate in Dongxin sour oil pipeline, it results in serious throttle problem at the outlet of oil transporting pump. Consequently, the low efficiency of oil transporting pump and heater leads to energy loss. According to the existing problem, the article puts forward a number of feasible technical alternatives. Through analysis and optimization, it is considered that pump impeller turning is suitable for the actual situation of the pipeline. The article gives rated working coefficient of pump after turning, introduces combined running situation and running result of pump after turning at each station and also puts forward some study alternatives.