Severe laryngotracheal stenosis is an increasing problem as greater numbers of persons survive airway trauma. Grafts of different tissues such as skin, fascia, hyoid bone, costal cartilage, nasal septal cartilage, auricular cartilage & perichondrium have also been used for tracheal reconstruction. Revascularized perichondrium or periosteum may be the ideal graft to repair severe laryngotracheal stenosis because of it’s pliability, potential for bone or cartilage formation, resistance to infection and rapid mucosalization. We have performed tracheal reconstruction to quantify the chondrogenic capacity of autogenous free(N=5) and vasculized(N=5) auricular perichondrium placed in the trachea. In rabbit model, we have the following results after 11 weeks. 1) The defect on anterior tracheal wall was repaired well by an autogenous free or vasculized perichondrium graft. 2) It was confirmed that auricular perichondrium was the suitable material for the reconstruction of the tracheal defect. 3) Vasculized auricular perichondrium produced significantly more cartilage(mean thickness±SD=0.42±0.12mm) than free auricular perichondrium(mean thickness±SD=0.20±0.12mm) when placed in the trachea(p=0.032).