Phase　change　materials　(PCMs)　have　broad　application　prospects　in　energy-saving　buildings.　Herein,　this　is　the　first　report　to　realize　the　in　situ　modified　expanded　perlite　(MEP)　of　graphitized　carbon　through　metal　catalysis-anaerobic　carbonization.　Simultaneously,　capric-palmitic　acid　(CA-PA)　PCMs,　which　possess　ideal　phase　change　enthalpy　and　a　phase　change　temperature　(T-pc)　suitable　for　human　life,　were　prepared　with　good　temperature　regulation　ability　in　the　temperature　range　of　20-30　degrees　C.　A　series　of　MEP/CA-PA　form-stable　PCMs　(FS-PCMs)　based　on　CA-PA　PCMs　and　MEP　were　prepared,　and　their　Tpc　values　were　suitable　for　human　comfort　and　also　had　good　heat　storage/release　capabilities.　Also,　compared　with　EP/CA-PA　FS-PCMs,　the　thermal　conductivity　of　MEP/CA-PA　FS-PCMs　was　significantly　enhanced.　Overall,　this　work　promotes　the　potential　applications　of　MEP/CA-PA　FS-PCMs　in　energy-saving　buildings　and　provides　a　strategy　for　enhancing　the　thermal　conductivity　of　FS-PCMs.