Phase　change　energy　storage　plays　an　important　role　in　the　green,　efficient,　and　sustainable　use　of　energy.　Solar　energy　is　stored　by　phase　change　materials　to　realize　the　time　and　space　displacement　of　energy.　This　article　reviews　the　classification　of　phase　change　materials　and　commonly　used　phase　change　materials　in　the　direction　of　energy　storage.　Commonly　used　phase　change　materials　in　construction　and　their　packaging　methods　are　listed　according　to　the　properties　of　phase　change　materials.　Through　different　packaging　methods　to　enhance　heat　exchange,　this　work　solves　the　problem　of　material　leakage　and　summarizes　the　advantages　and　disadvantages　of　those　methods　through　comparative　analysis.　The　impact　of　macro-encapsulation　and　micro-encapsulation　on　material　encapsulation　are　also　outlined.　The　simulation　and　model　construction　methods　of　different　packaging　methods　are　reviewed.　This　research　is　dedicated　to　the　comparative　analysis　of　the　selection　of　phase　change　materials　and　packaging　methods　in　buildings　a　to　actively　promote　the　promotion　and　application　of　phase　change　energy　storage　in　buildings.