The invention discloses a container ship with top-inclined fuel oil tanks between cargo compartments. In the length direction of the ship, the cargo compartments (6) and the fuel oil tanks (5) are arranged at intervals; in the width direction of the ship, the left side and the right side are symmetrically arranged, and the cargo compartments are same wide as the fuel oil tanks; in the length direction of the ship, the spacing between supporting compartment walls at two ends of each fuel oil tank is greater than 2m; the spacing between the top of each fuel oil tank and an upper deck is greater than or equal to 1m; the top of each fuel oil tank and the compartment wall in the broadside direction of the ship are in transitional connection with the position, in height junction with a second deck, at the top of the fuel oil tank in a 45-degree angle mode. The top of a middle part of each fuel oil deep tank moves upwards from the two decks, so that the height of the fuel oil deep tank is increased to improve the tank capacity. The height of the end part of each fuel oil deep tank at the two decks of the broadside is unchanged, the top and the end of the middle fuel oil tank are connected by adopting a structure, an included angle of 45 degrees is formed between the structure and the broadside, and the height difference between an extension tank and a main deck is required to be at least one meter in order to guarantee the completeness of the ship structure.