Studying　the　chloride-induced　corrosion　of　reinforcement　in　geopolymer　is　of　great　significance　to　the　corrosion　prevention　of　marine　engineering.　In　this　paper,　the　chloride-induced　corrosion　experiments　of　reinforcement　in　five　solutions　with　different　compositions　and　concentrations　were　carried　out.　The　chloride　threshold　value　that　lead　to　initiate　depassivation　of　the　reinforcement　was　proposed.　The　phenomena　of　localized　corrosion　and　the　corrosion　current　density　were　further　analyzed.　The　results　show　that　the　chloride　threshold　value　Ccrit　increases　with　the　increase　of　alkaline　of　electrolyte.　Ca(OH)(2)　can　maintain　the　alkalinity　of　pore　solution.　Thus　the　reinforcement　immersed　in　Ca(OH)(2)　solution　can　be　repassivated,　which　enhances　the　stability　of　the　passivated　film.　The　results　further　show　that　the　reinforcement　in　geopolymer　exhibited　significantly　higher　corrosion　resistance,　however,　the　stability　properties　of　the　passivation　film　of　reinforcement　in　cement　is　better　than　that　of　reinforcement　in　geopolymer.　(C)　2021　Elsevier　Ltd.　All　rights　reserved.