Three-dimensional　body-heating　finite　element　method　simulation　was　carried　out　to　study　the　temperature　field　of　the　amorphous　Ge2Sb2Te5　film　induced　by　picosecond　laser　pulse.　In　the　model,　the　continuous　medium　heat　conduction　theory　with　semi-infinity　heat　conduction　was　employed　together　with　the　assumption　of　the　Gaussian　temporal　and　spatial　profiles.　The　verification　between　the　prediction　and　experiment　showed　that　simulated　results　reasonably　agreed　with　experimental　observations.　Based　on　the　simulation,　it　showed　that　the　maximum　temperature　appeared　at　the　top　surface　center,　and　the　variation　of　temperature　field　within　the　whole　film　followed　the　same　trend.　Characteristics　of　the　temperature　field　between　the　thin　and　thick　films　were　further　compared.　A　relatively　homogeneous　temperature　field　along　the　thickness　direction　was　obtained　for　the　case　of　thin　film　where　thermal　equilibrium　reaches　quickly.　The　total　absorbed　energy　by　the　Ge2Sb2Te5　film　increased　with　the　increase　of　film　thickness,　however,　the　predicted　maximum　temperature　at　the　top　surface　center　declines　with　the　increment　of　film　thickness,　which　is　affected　by　thermal　conduction.　(C)　2015　Elsevier　B.V.　All　rights　reserved.