Abstract: Honghu-Jingmen oil pipeline transports many kinds of oils, such as Xijiang oil, Huizhou oil, Jianghan oil. Russian oil and Middle East oil. in batch transportation way all the year round. To increase transfer efficiency and save energy, BEM-7 PPD has been developed, which has better modification effect to the oils. The results obtained from PPD laboratory and site injection tests have shown that Honghu-Jingmen oil pipeline will operate under safer and more economic conditions after BEM-7 PPD injected. Besides, the influence factor of reheating to the oils with PPD treated is discussed in the paper.