To　evaluate　the　chloride　ion　corrosion　resistance　of　proposed　innovative　self-healing　concrete　based　on　shape　memory　alloys　(SMA)　and　engineering　cementitious　composites　(ECC),　a　total　of　2　kinds　of　22　specimens　were　prepared.　Chloride　ion　corrosion　tests　of　self-healing　SMA-ECC　concrete　under　dry-wet　cycles　were　carried　out.　It　was　found　that　the　chloride　ion　erosion　depths　of　SMA-ECC　were　significantly　smaller　than　that　of　MC,　and　the　growth　rate　of　erosion　depth　of　SMA-ECC　was　obviously　smaller　than　that　of　MC　after　15　dry-wet　(dry　and　wet)　corrosion　cycles.　The　chloride　ion　content　of　SMA-ECC　vanished　at　the　erosion　depth　more　than　10　mm,　which　was　consistent　with　the　test　result　of　AgNO3　solution　color-rendering　test.　Test　results　indicate　that,　compared　to　marine　concrete　(MC),　SMA-ECC　has　a　better　chloride　ion　corrosion　resistance　behavior.　Moreover,　the　chloride　ion　concentration　of　SMA-ECC　at　a　chloride　ion　erosion　depth　of　less　than　10　mm　decreased　more　significantly　than　that　of　MC,　indicating　that　almost　all　chloride　salt　solution　reacted　in　the　outer　layer　of　SMA-ECC,　which　is　consistent　with　the　conclusions　of　4.1　and　4.2.　Finally,　based　on　the　erosion　distribution　of　chloride　ions　and　Fick’s　second　law,　a　calculation　model　describing　the　relationship　between　the　apparent　chloride　ion　diffusion　coefficient　and　the　boundary　condition　of　the　chloride　ion　content　was　proposed.　©　2023　by　the　authors.