Objective To investigate and evaluate the biomechanical property of adult excised porcine trachea in order to provide the experimental methods and evidence for biomedical engineering artificial trachea.Methods TY8000 servo-handle tension test machine was used to measure the biomechanical index such as bending stiffness,radial pedestal force and stress-straining of the excised porcine trachea.The residual stress and bursting strength were also evaluated.Results The results showed that residual stress was remained in the adult excised porcine trachea.The force of radial pedestal was measured to be about 10N when the diameter of trachea was compressed to 50%.The bursting strength from pharyngeal portion to eminence of the trachea gradually dropped off with the data of 180mmHg at the pharyngeal portion while 110 mmHg at the eminence.The curve of stress-straining was described to be 0.296N～0.131N、0.254N～0.150N,respectively according to the date.Conclusion The residual stress was remained in the excised porcine trachea and the membrane of the porcine trachea will disrupt as the endospore pressure increases.It shows that the excised porcine trachea has perfect radial pedestal force,bending and elongation properties.