Massive　accumulation　of　industrial　carbide　slag　tend　to　cause　ecological　environment　pollution　and　greenhouse　gas　emission.　This　innovative　work　proposed　to　fabricate　shape-stable　phase　change　materials　(SSPCMs)　with　carbide　slag　to　utilise　industrial　solid　waste　and　protect　precious　natural　resources.　Seven　SSPCMs　were　fabricated　with　different　mass　ratios　of　industrial　carbide　slag　to　sodium　nitrate　by　cold-compression　hot-sintering　method,　and　key　performance　was　investigated　on　the　SSPCMs.　Results　showed　that　the　SSPCM　(sample　CC6)　with　the　mass　ratio　of　5:5　of　carbide　slag　to　sodium　nitrate　presented　the　best　performance:　sample　CC6　achieved　a　high　thermal　energy　storage　density　of　447　J/g　in　the　range　of　100-400　?　and　reached　a　mechanical　strength　of　73.6　MPa;　sample　CC6　demonstrated　a　good　thermal　stability　and　chemical　compatibility　between　carbide　slag　and　sodium　nitrate　during　the　heating/cooling　cycles;　the　thermal　conductivity　of　sample　CC6　was　0.93　W/　(m　&　BULL;K),　and　elements　distributed　uniformly　in　sample　CC6.