In　order　to　obtain　low-cost　and　excellent　adsorption　materials,　this　paper　used　calcium　acetate　and　water　glass　as　raw　materials　to　synthesis　hydrated　calcium　silicate　gel　by　precipitation　method.　The　performance　and　structure　of　hydrated　calcium　silicate　gel　were　systematically　studied　by　X-ray　photoelectron　spectroscopy,　fourier　transform　infrared　spectroscopy,　specific　surface　area　analyzer　and　scanning　electron　microscope.　Studies　have　shown　that,　non-crystal　hydrated　calcium　silicate　gel　(CSH)　were　successfully　prepared,　and　the　removal　rate　of　lead　ion　using　CSH　reached　more　than　90%.　The　adsorption　process　is　consistent　with　the　pseudo-second-order　kinetic　model　and　Langmuir　adsorption　isotherm　model,　and　the　limit　adsorption　capacity　reaches　263.17　mg·g-1.　The　acid　treatment　experiment　proved　that　the　adsorption　capacity　of　lead　ion　using　CSH　was　satisfactory,　and　the　adsorption　rate　remained　at　＞60%　after　5　cycles.　The　research　may　provide　a　low-cost,　high-efficiency　and　high　stability　adsorbent.