High-temperature　phase　change　materials　(PCMs)　have　broad　application　prospects　in　areas　such　as　power　peak　shaving,　waste　heat　recycling,　and　solar　thermal　power　generation.　They　address　the　need　for　clean　energy　and　improved　energy　efficiency,　which　complies　with　the　global　“carbon　peak”　and　“carbon　neutral”　strategy　requirements.　This　study　provides　an　overview　of　the　definition,　standards,　packaging　process,　and　current　state　of　high-temperature　composite　PCMs　based　on　their　significant　energy　application　potential,　economic　value,　and　environmental　value　process.　Finally,　the　future　development　of　high-temperature　composite　PCMs　is　summarized　and　prospected.　©　2023　Elsevier　Ltd