The work aims to study effects of different constant potential on corrosive wear behavior of TiN coating in artificial seawater environment. TiN coating was deposited on 316 stainless steel with multi-arc ion plating system. Phase structure, hardness, adhesion, electrochemical properties, friction coefficient and wear rate were evaluated by performing XRD test, nanoindentation hardness test, film-substrate adhesion test, electrochemical workstation test, abrasion test at different constant potential and section profile test of coating grinding crack were evaluated. Surface morphology, section morphology and grinding crack morphology of the coatings were analyzed with SEM. Under the friction condition, open circuit potential declined gradually with the increase of sliding friction time. At different constant voltage (?1 V, ?0.5 V, OCP, 0 V), average friction coefficient was 0.392, 0.416, 0.324, 0.348, respectively. Wear rate was 1.8117×10?6 mm3/(N?m), 3.1123×10?6 mm3/(N?m), 4.5958×10?6 mm3/(N?m), 7.7724×10?6 mm3/(N?m), respectively. At 0.5 V, the coating was worn out. Main corrosive wear mechanisms of TiN coating in artificial seawater were abrasive wear and fatigue pitting. With the increase of load potential, wear volume and wear rate of TiN coating increase simultaneously. At the potential of (?1 V, ?0.5 V, OCP), as corrosion-accelerated wear loss accounts for a higher proportion of total loss, namely 0%, 41.78%, 61.77% and 75.61%. At 0 V, wear-accelerated loss is generated on TiN coating, which accounts for about 6.1% of the total loss.