Ship-exhausted　air　pollutants　could　cause　negative　impacts　on　air　quality,　climate　change,　and　human　health.　Increasing　attention　has　been　paid　to　investigate　the　impact　of　ship　emissions　on　air　quality.　However,　the　conclusions　are　often　based　on　a　specific　year,　the　extent　to　which　the　inter-annual　variation　in　meteorological　conditions　affects　the　contribution　is　not　yet　fully　addressed.　Therefore,　in　this　study,　the　Weather　Research　and　Forecast　model　and　the　Community　Multiscale　Air　Quality　model(WRF/CMAQ)　were　employed　to　investigate　the　inter-annual　variations　in　ship-contributed　PM2.5　from　2010　to　2019.　The　Yangtze　River　Delta　(YRD)　region　in　China　was　selected　as　the　target　study　area.　To　highlight　the　impact　of　inter-annual　meteorological　variations,　the　emission　inventory　and　model　configurations　were　kept　the　same　for　the　10-year　simulation.　We　found　that:　(1)　inter-annual　meteorological　variation　had　an　evident　impact　on　the　ship-contributed　PM2.5　in　most　coastal　cities　around　YRD.　Taking　Shanghai　as　an　example,　the　contribution　varied　between　3.05　and　5.74　mu　g/m(3),　with　the　fluctuation　rate　of　similar　to　65%;　(2)　the　inter-annual　changes　in　ship＇s　contribution　showed　a　trend　of　almost　simultaneous　increase　and　decrease　for　most　cities,　which　indicates　that　the　impact　of　inter-annual　meteorological　variation　was　more　regional　than　local;　(3)　the　inter-annual　changes　in　the　northern　part　of　YRD　were　significantly　higher　than　those　in　the　south;　(4)　the　most　significant　inter-annual　changes　were　found　in　summer,　followed　by　spring,　fall　and　winter.