The　waste　light-emitting　diode　(WLED)　is　a　new　type　waste　electrical　and　electronic　equipment　(WEEE).　The　volume　of　waste　WLEDs　is　huge　and　effective　recycling　and　treatment　have　attracted　widespread　attention.　However,　it＇s　difficult　to　handle　the　WLED　packaging　materials　in　the　recycling　process　because　of　the　complex　structure.　Few　studies　have　been　conducted　to　analyze　the　efficient　recycling　of　WLED　packaging　materials.　In　this　study,　the　pyrolysis　characteristics,　pyrolysis　kinetics　and　product　composition　of　light-emitting　diode　(LED)　packaging　materials　methyl　phenyl　silicon　(MPS)　were　investigated　using　TG　analysis,　kinetic　analysis,　TG-FTIR　analysis　and　Py-GC/MS　analysis.　Density　functional　theory　(DFT)　calculation　was　further　combined　to　study　the　pyrolysis　process　of　MPS.　The　TG　analysis　showed　that　the　MPS　pyrolysis　was　divided　into　two　stages:　310-561　degrees　C　and　499-980　degrees　C.　The　apparent　activation　energies　of　MPS　pyrolysis　were　calculated　by　Flynn-Wall-Ozawa　(FWO)　and　Kissinger-Akahira-Sunose　(KAS)　methods　to　be　144.68-149.76　kJ　center　dot　mol(-1)　(Stage　I)　and　95.99-105.47　kJ　center　dot　mol(-1)　(Stage　II),　respectively.　The　pyrolysis　kinetic　reaction　model　of　MPS　was　determined　by　the　Coats-Redfern　(CR)　method:　D1　for　Stage　I,　C2　for　Stage　II.　According　to　the　TG-FTIR　and　Py-GC/MS　analysis　results,　8　major　gaseous　products　in　the　MPS　pyrolysis　process　were　identified,　including　CO2,　benzene,　HCl,　biphenyl,　chlorobenzene,　styrene,　ethylbenzene　and　chlorodimethylphenylsilane.　Finally,　the　formation　mechanism　of　different　pyrolysis　products　was　determined　by　DFT　calculation.　The　pyrolysis　characteristics　and　pyrolysis　mechanism　of　WLED　packaging　materials　may　be　helpful　for　the　optimization　of　WLEDs　pyrolysis　recycling　process　and　the　regulation　of　pyrolysis　products.