Polyoxymethylene dimethyl ethers (PODE3-8) is a new type of diesel fuel additive that can improve combustion and reduce pollution emissions significantly. In this study, the effect of the different ratios of PODE3-8 to diesel on the properties of diesel fuel was studied. The results showed that 20% of the mixed sample improved the quality of diesel oil, reducing the pour point from to -6?, enhancing the cetane number from 46 to 53.6, and increasing the flashpoint from 55 to 57?. All other technical specifications of polyoxymethylene dimethyl ether and 20% blending diesel were in accordance with the Chinese National Standards of 0(#)diesel.