Background:　To　investigate　and　evaluate　the　biomechanical　properties　of　adult-excised　porcine　trachea,　thereby　providing　experimental　methods　and　evidence　for　biomedical　engineering　of　artificial　trachea.　Methods:　The　TY8000　servo-handle　tension　test　machine　was　used　to　measure　biomechanical　indices,　such　as　bending　stiffness,　radial　pedestal,　and　stress-straining.　The　residual　stress　and　bursting　strength　of　adult-excised　porcine　trachea　was　evaluated.　Results:　Residual　stress　was　retained　in　the　adult-excised　porcine　trachea.　The　force　of　radial　pedestal　was　detected　as　10　N,　when　the　diameter　of　a　50-mm　trachea　was　compressed　to　50%.　The　bursting　strength　decreased　from　180　mmHg　of　pharyngeal　portion　to　110　mmHg　in　tracheal　carina.　When　the　trachea　flexed　forward　or　either　right　or　left　by　50　degrees,　tension　reached　0.296　to　0.131　N　and　0.254　to　0.150　N,　respectively.　The　curve　of　stress-straining　measured,　according　to　computer　data　and　results,　suggested　that　tension　was　maintained　at　a　low　level　at　50%　strain.　Conclusions:　Residual　stress　was　retained　in　the　excised　porcine　trachea,　and　the　porcine　trachea　membrane　disrupted　when　pressure　in　the　inner　wall　increased.　The　porcine　trachea　exhibits　good　radial　pedestal　force,　bending,　and　elongation　properties.