Abstract: Based on comparison analysis, import biodiesel blend fuel and import diesel had 12 same inspection items, in which 8 inspection items had the same test methods. Most of quality indices of import biodiesel blend fuel were higher or equal to those of import diesel. Technical requirements and inspection results of most items such as 10% evaporation residue carbon pour point and distillation were better than proper items of import diesel. Particularly, for sulfur content, quality index of import biodiesel blend fuel was no more than 0.001 0% (mass fraction), while the inspection result was only 0.000 2% (mass fraction)-0.000 6% (mass fraction), which was much lower than that of import diesel of 0.42% (mass fraction)-0.48% (mass fraction), meeting the requirements of Euro Ⅳ and Euro Ⅴ indices. The import of biodiesel blend fuel creates conditions for improvement of diesel quality, reduction of erosion of engine parts, reduction of pollution emissions, and has better application performance than import diesel.