This　paper　mainly　introduced　the　causations　of　deep-sea　submersible　(DS)　surface　material　damage　and　some　methods　of　research　on　corrosion　and　fatigue.　It　is　suggested　that　investigating　the　mechanisms　and　effects　of　corrosion　and　fatigue　damage　on　DS　steel　structure　and　coating,　and　the　mapping　relation　for　the　origin　and　accumulation　of　cross　scale　damage　should　be　established.　In　addition,　organic　coating,　metallic　coating,　steel　matrix　and　their　interaction　could　be　detected　and　analysed　using　the　methods　of　SEM,　XRD,　TEM,　EIS,　EN,　CV,　Kelvin　probe　and　so　on.　At　last,　mathematical　model　of　service　life　for　the　steel　structure　and　coating　should　be　established　for　the　quantification　study.