The use of Marlex mesh in the treatment of inguinal hernia produces a series of advantages, if compared with traditional techniques. According to the authors, these advantages can be identified with the ambulatorial treatment of this pathology, with the possibility to use the local anaesthetic, with a minimum postoperating pain, with a possible collaboration of the patients with the surgeon during the operation, and with a considerable reduction of relapses. The authors explain the different steps of their techniques.