The authors report their personal experience (169 pz.) of the primary inguinal hernia repair in day surgery treated in local anaesthesia and by applying prosthesis according to latest «Tension-free and Suture-less» techniques. Results surely confirmed the validity of the method and the utility in creating centres concerning this type of surgery so that we are able to grant to the patient the best comfort that is to say a relevant reduction of the recurrence and a faster reintegration of patient’s activities daily living.