Recent　advancements　in　renewable　energy　have　enabled　a　reduction　of　fossil　fuel　usage.　However,　the　so-called　energy　waste,　such　as　end-of-life　(EoL)　photovoltaic　(PV)　modules,　has　become　a　simultaneous　emerging　issue　in　the　field　of　solid　waste　management.　Debonding　of　ethylene-vinyl-acetate　(EVA)　copolymer　is　critical　for　recycling　EoL　PV　modules.　The　separation　of　organic　substances　may　be　done　effectively　using　pyrolysis　technology.　Therefore,　in　this　work　we　investigated　the　pyrolysis　characteristic　and　mechanism　of　EVA.　Based　on　TG,　TGFTIR,　and　Py-GC/MS,　the　pyrolysis　products　and　pyrolysis　characteristics　of　EVA　were　examined.　Activation　energies　and　reaction　mechanisms　were　determined　through　iso-conversional　model-free　and　model-fitting　methods.　Combined　with　density　functional　theory　(DFT)　calculations,　the　pyrolysis　mechanism　of　EVA　was　discussed.　Our　research　shows　that　the　pyrolysis　technology　can　almost　completely　decompose　EVA　without　residue　and　the　EVA　pyrolysis　can　be　divided　into　two　stages.　Combined　with　DFT　calculation,　it　was　found　that　in　the　stage　I,　acetoxy　was　removed　to　generate　acetic　acid,　and　in　the　stage　II,　the　main　chain　of　EVA　was　broken　to　generate　olefins.　The　recycling　strategy　based　on　two-step　pyrolysis　of　Eol　PV　modules　was　accordingly　proposed.