In　order　to　obtain　molten　salt　with　lower　melting　point,　high　decomposition　point　and　better　thermal　stability,　8　kinds　of　mixed　molten　salts　are　obtained　by　adjusting　the　component　ratio　and　adding　additives　into　HITEC　salt.　A　formula　with　low　melting　point　and　high　decomposition　point　has　been　exploited　and　its　primary　thermo-physical　properties　were　presented　here.　The　melting　point　and　the　decomposition　point　were　determined　to　be　84　℃　and　628.2　℃,　further　the　specific　heat,　density,　thermal　conductivity　were　determined　respectively.　Sensible　thermal　storage　cost　of　this　mixture　was　found　to　be　lower　than　that　of　conventional　solar　salt　and　HITEC　salt.　Further　experimental　analysis　of　the　long-term　thermal　stability　(565　℃)　and　heating-cooling　cyclic　thermal　stability　(200-500　℃)　was　carried　out.　Therefore,　this　new　kind　of　molten　salt　not　only　can　reduce　the　risk　of　pipe　clogging　and　the　cost　of　system　antifreeze,　but　also　has　perfect　thermal　stability,　has　the　potential　for　use　as　a　heat　transfer　and　thermal　storage　material　in　solar　thermal　power　plants　and　nuclear　power　plants.　©　2018　International　Heat　Transfer　Conference.　All　rights　reserved.