Objective:　To　evaluate　the　viscoelastic　properties　of　porcine　acellular　dermal　matrix　(PADM)　by　comparison　and　analysis　on　physical　parameters　of　the　skin.　Methods:　Full-thickness　skin　defects　were　performed　on　the　back　of　white　rabbits　as　wound　models,　and　randomly　divided　these　wounds　into　3　groups　according　to　different　methods　of　skin　grafting:　PADM　group　(autogenous　skin　and　PADM　were　grafted　to　the　surface　of　the　wound),　TS　group　(autogenous　skin　was　grafted　in　situ),　NS　group　(normal　skin　as　the　control).　Experiments　on　the　stress-strain　relationship　of　the　implanted　skin　in　the　three　groups　were　conducted.　Results:　The　curves　of　stress　relaxation,　creep,　and　stress-strain　relationship　showed　that　under　a　given　stress,　PADM　group　had　the　lowest　strain,　NS　group　had　the　highest　strain,　while　the　strain　of　TS　group　was　in　between　the　PADM　and　NS　group.　Conclusions:　The　skin　viscoelasticity　mechanical　model　is　a　four-parameter　solid　model.　When　the　skin　wounds　are　grafted　by　using　PADM　which　may　have　poor　elasticity,　its　recovery　capacity　after　deformation　is　also　poor,　and　this　is　in　agreement　with　the　clinical　results.