Objective:This study aimd to evaluate the application and clinical effect of improved submental island flap in hypopharyngeal cancer reserved laryngeal function surgery.Method:A retrospective review of clinical data was performed on 38 patients of hypopharyngeal cancer reserved laryngeal function using sumental island flaps,by the way of improving in design of vascular pedicle,reconstructive mode of laryngeal and hypopharyngeal function and closing of wound of neck following hypopharyngeal cancer resection....