Abstract: The ebullated-bed hydrotreated products of medium temperature coal tar were distilled to get fractions of >355 ℃ and > 400 ℃, which then were analyzed for their compositions and properties. The compatibility and storage stability of the blended fuel oils, which were prepared by blending of > 400 fraction, the floating oil on the water, coal diesel and shale oil, were studied. The results show that the > 355 ℃ fraction can directly be used as 180# marine fuel oil; > 400 ℃ fraction has a good compatibility with floating oil, coal diesel and shale oil and can be used as a high quality blending component of 180 # marine fuel oil. The 180# marine fuel oil can be prepared by blending > 400 fractions, floating oil, shale oil and coal diesel with a ratio of 67%, 12%，10% and 11%, respectively. The product meets the national standard GB/T 17411 of marine fuel oil.