The　compressed　air　energy　storage　is　widely　studied　as　promising　large-scale　energy　storage　technology.　This　study　focus　on　the　design　and　investigation　of　cold　storage　material　for　large-scale　application　in　supercritical　compressed　air　energy　storage　system.　Different　kinds　of　cold　storage　materials　for　supercritical　compressed　air　energy　storage　system　are　comparatively　analyzed　at　first,　and　the　sodium　chloride　is　selected　as　the　suitable　cold　storage　material　for　supercritical　compressed　air　energy　storage　system.　Meanwhile,　the　thermal　and　mechanical　properties　of　suitable　sodium　chloride　particle　are　measured.　The　results　show　that　the　density　of　sodium　chloride　particle　is　2.1589　g/cm3.　The　average　specific　heat　and　thermal　conductivity　of　sodium　chloride　particle　are　0.81　J/(g　&　sdot;K)　and　5.8576　W/(m　&　sdot;K)　in　the　test　temperature　range.　In　addition,　the　average　values　of　Mohs　hardness　and　Vickers　hardness　of　processed　sodium　chloride　particles　are　3　Mohs　and　11.7　HV,　respectively.　The　maximum　compressive　strength　of　sodium　chloride　samples　tested　at　-196　degrees　C　and　20　degrees　C　are　6.25　MPa　and　24.45　MPa,　respectively.　Furthermore,　the　abradability　of　sodium　chloride　particles　are　tested,　the　mass　loss　rate　of　sodium　chloride　particles　is　0.11　%.　The　cold　storage　performance　of　the　designed　and　processed　sodium　chloride　particle　cold　storage　materials　is　numerically　simulated.　The　average　temperature　of　sodium　chloride　particles　gradually　decreases　from　293.15　K　to　119.26　K,　which　can　storage　37,128.57　kJ　cold　energy　in　total.　This　work　can　provide　basic　data　for　the　further　cold　storage　material　research　of　supercritical　compressed　air　energy　storage　system.