In　order　to　address　new　challenges　that　arise　in　the　degradation　behavior　of　absorbable　metal　stents　(AMSs)　in　vivo,　new　modelling　and　simulation　are　presented　in　this　study.　A　dynamic　corrosion　model　(Model　1)　considering　uniform　corrosion,　stress　corrosion　mechanisms　and　dynamic　cyclic　pulse　loading　was　proposed　to　simulate　the　stent　degradation　based　on　Continuum　Damage　Mechanics　(CDM).　A　control　group　(Model　2)　was　established　which　only　considered　the　mechanisms　of　uniform　and　stress　corrosion.　The　time　of　stent　degraded　completely　in　Model　1　was　set　as　a　normalized　time　unit　(100t)　to　illustrate　the　results.　With　the　increase　of　time,　the　mass　and　supporting　performance　of　the　stent　decreased,　especially　at　10t　to　20t.　The　average　von　Mises　Stress　of　the　stent　in　the　Model　1　decreases　from　86.19　MPa　to　48.65　MPa　roughly　at　5t　to15t,　while　the　average　von　Mises　Stress　in　Model　2　decreases　from　87.12　MPa　to　50　MPa.　The　mass　loss　ratio　of　stents　in　Model　1　is　always　higher　than　that　in　Model　2,　and　the　relative　error　of　the　mass　loss　ratio　reached　14.3%　at　20t.　The　results　showed　that　the　corrosion　occurs　at　first　in　the　stent　struts　with　the　highest　von　Mises　stress.　In　addition,　the　dynamic　cyclic　pulse　loading　accelerated　the　degradation　rate　and　the　supporting　performance　loss　of　stent.　These　modelling　and　simulation　techniques　may　provide　new　insights　to　in　vivo　AMS　performance.　(C)　2019　The　Authors.　Published　by　Elsevier　B.V.