The utility model discloses a marine hazardous article transport case. Outer box, a storage inner box body is arranged in the outer box body; foamed plastic layers are arranged on the inner walls of the storage inner box body. A box body top cover is installed at the top of the storage inner box body, four evenly-distributed damping springs are installed on the inner wall of the bottom of the outer box body, the storage inner box body is arranged above the damping springs, and two sets of symmetrically-arranged sealing assemblies are arranged at the top of the box body top cover. A damping spring is arranged at the bottom between an outer box body and an inner box body; buffer washers are clamped among the four sides through a top cover when the four sides are sealed; and in cooperation with foam cotton on the inner wall of the storage inner box body, shaking caused by jolting in the transportation process can be greatly weakened, the storage condition of dangerous goods is met, the transportation safety of the goods is effectively guaranteed, and a sealed storage space is formed between the box body top cover and the inner box body by designing a sealing rubber pad and a buffer gasket on the box body top cover.