Abstract: With the development and exploration of marine resources, mechanical seal has become one of the essential and key elements in stable operation of marine equipment and reliable ocean development. Research status on mechanical seal for marine equipment were reviewed from the views of tribology and dynamics. The sealing interface effect, multi-field coupling, dynamic characteristics, sealing surface texture were mainly focused, and the research directions and trends of mechanical seal technology were summarized and explored. The development trend of mechanical seal technology for marine equipment was presented. It provided the foundation for the design, development and application of mechanical seals for marine equipment in the future. It is of great significance to improve the sealing performances, safety, stability and reliability of mechanical seal for marine equipment in operation.