In　this　paper,　the　powdered　activated　carbon　is　taken　as　the　main　raw　material　to　develop　a　new　material　of　inorganic　activated　charcoal　gel　by　using　silicate　cement　as　the　gelling　agent.　The　micro-structure　of　this　material　is　characterized　by　XRD,　BET,　SEM,　EDS　and　so　on;　and　the　adsorption　and　cyclic　regeneration　characteristics　of　formaldehyde　on　the　material　are　primarily　studied.　The　experimental　results　show　that　this　material　is　an　adsorbent　on　the　basis　of　micropores　distributed　between　0.60-1.12　nm,　with　specific　surface　area　of　452.86　m(2)/g,　average　pore　size　of　2.62　nm　and　total　pore　space　of　0.30　m(3)/g.　The　samples　have　excellent　formaldehyde　adsorption　ability　with　saturation　adsorption　of　268.00　mg/g;　after　20　times　of　cyclic　adsorption　and　desorption,　the　formaldehyde　adsorption　rate　of　the　samples　can　remain　49%　of　the　original　value,　showing　good　cyclic　regeneration　of　the　samples.