In　this　paper,　a　kind　of　core-shell　structured　ceramsite　was　proposed　to　reuse　the　soda　residue　and　to　control　the　chloride　ion　release,　wherein　the　ceramsite　has　a　core　having　a　high　content　of　soda　residue　and　a　vitrified　shell.　Experimental　results　showed　that　the　amount　of　free　chloride　ions　in　the　mixture　containing　58%(by　weight)　of　fly　ash,　2%(by　weight)　of　glass　powder　and　40%(by　weight)　of　soda　residue,　after　being　mixed　with　water　at　the　water/powder　ratio　of　0.5　and　cured　at　90%　RH,　25　degrees　C　for　7　days,　was　found　to　decrease　from　5.92%　to　2.84%.　That　is,　the　chloride　ion　was　immobilized　by　the　alkali　activated　fly　ash　in　the　mixture　and　the　immobilization　rate　was　as　high　as　52%.　The　core-shell　structured　ceramsite　was　prepared　successfully　with　the　above　mixture　as　the　core　and　the　mixture　of　waste　glass　powder　and　shale　as　the　shell　and　fired　at　1120　degrees　C　for　8　min.　No　chloride　ion　was　detected　in　the　eluent　after　the　as-prepared　ceramsite　was　soaked　in　deionized　water　at　25　degrees　C　for　24h.