Microbial influenced corrosion (MIC) in marine environment has been recognized as an important form of corrosion damage of marine engineering metal structures. Ships sailing in the ocean are not only affected by sea water corrosion, but also the various components of the ship will be affected by MIC. The serious MIC can cause the blockage of the pipeline, the failure of the components and the corrosion of the perforation, which not only affect the normal operation of the ship, but also seriously threaten the safety of the ship. This paper analyzes the sites and harm of MIC in ship, corrosion microbial community in different parts, MIC of ship materials, and applicability of different protection technology, and on this basis, put forward suggestions of marine microbial corrosion of research work.