2D　metal　phosphorous　trichalcogenides　(MPCh(3))　have　attracted　considerable　attention　in　sustainable　energy　storage　and　conversion　due　to　their　distinct　physical　and　chemical　characteristics,　such　as　adjustable　energy　bandgap,　significant　specific　surface　area,　and　abundant　active　sites.　However,　research　on　2D　MPCh(3)　primarily　focuses　on　electrocatalysis,　and　understanding　its　energy　conversion　and　storage　mechanisms　remains　incomplete.　This　review　comprehensively　summarizes　recent　advancements　in　energy　storage　and　conversion　using　2D　MPCh(3)-based　materials　of　various　structures.　It　begins　with　a　discussion　of　the　distinctive　properties　and　preparation　techniques　of　2D　MPCh(3),　followed　by　a　focus　on　the　rational　design　and　development　of　these　materials　for　diverse　energy-related　applications,　including　rechargeable　batteries,　supercapacitors,　electrocatalysis,　photocatalysis,　and　desalination.　Finally,　it　outlines　the　key　challenges　and　prospects　for　future　research　on　2D　MPCh(3)　materials.