Calcium　silicate　hydrate　(CSH)　gel　is　an　important　hydration　product　of　cement,　significantly　influencing　the　coagulation　and　hardening　processes,　as　well　as　the　mechanical　properties,　volume　stability,　and　durability　of　cement.　Moreover,　it　plays　a　crucial　role　in　the　adsorption　of　harmful　ions.　In　this　study,　CSH　gel　was　synthesized　through　the　precipitation　of　calcium　acetate　and　sodium　silicate　and　was　subsequently　used　to　adsorb　chloride　ions.　The　results　indicated　that　when　the　calcium-to-silicon　ratio　was　1.2,　the　CSH　gel　exhibited　excellent　adsorption　performance　for　chloride　ions　introduced　via　CaCl2　and　NaCl,　with　adsorption　capacities　of　17.45　mgg-1　and　8.06　mgg-1,　respectively.　The　adsorption　of　chloride　ions　in　CSH　gel　primarily　occurs　due　to　the　physical　adsorption　of　chloride　ions　on　the　surface　and　within　the　internal　pores　of　the　CSH　gel,　accompanied　by　a　displacement　reaction　between　hydroxide　ion　and　chloride　ions.