With the rapid development of social economy, the vast ocean space and rich marine resources have begun to enter people’s field of vision. The ocean is a huge resource treasure house, rich in biological resources, energy resources and ocean energy resources. The development and utilization of marine resources are inseparable from the research and development of marine special materials, and friction and wear in harsh marine environments are key issues that restrict the application of marine materials and the development of marine equipment. Study the corrosion and wear behavior of 316L and 2205 stainless steel under two commonly used seawater conditions: seawater corrosion wear and cathodic protection, and use a variety of testing methods such as XRD, metallography, electrochemical testing and corrosion and wear synergy to analyze the microstructure phase changes From the angle, the effect of seawater sliding wear on the corrosion and wear properties of stainless steel is analyzed.The research results are as follows: