This　study　fabricated　a　kind　of　novel　phase　change　microcapsules　with　a　metal-polymer　hybrid　capsule　shell　for　applying　in　gypsum　materials　to　reduce　building　energy　consumption.　The　microstructure,　composition　and　thermal　characteristics　of　the　microcapsules　were　investigated　by　using　techniques　such　as　the　scanning　electron　microscope,　Fourier　transform　infrared　spectroscopy,　X-ray　photoelectron　spectroscopy　and　differential　scanning　calorimetry.　Their　impact　on　the　thermal　regulation　characteristics　of　gypsum　composite　materials　was　also　analyzed　through　the　heating　plate　test　and　simulated　room　experiment.　Results　show　the　microcapsules　with　inner　organic　polymer　and　outer　copper　layer　were　successfully　fabricated.　And　they　exhibited　a　phase　change　temperature　between　22.3　℃　and　23.3　℃　and　latent　heat　between　82.2　J/g　to　139.5　J/g.　Meanwhile,　the　thermal　inertia　and　thermal　storage　capacity　of　gypsum　composites　were　enhanced　by　incorporating　the　final　microcapsules.　After　heated　for　40　min,　the　gypsum　composite　board　with　MPCM-Cu　shows　the　ability　to　reduce　the　room　temperature　fluctuation.　Furthermore,　the　thermal　performance　of　MPCM-Cu　remains　stable　after　250　thermal　cycles.　These　results　indicate　that　final　microcapsules　exhibit　the　potential　for　building　energy　conservation.　©　2024　Elsevier　Ltd