In excess of 100,000 inguinal hernia repairs are performed in the UK each year (Devlin & Kingsnorth 1998). It is the most commonly performed general surgical procedure and is routinely undertaken in patients receiving local anaesthesia in the day case setting. The Royal College of Surgeons has recommended that > 50% inguinal hernias are undertaken on day cases, although at present this figure is only 30% (RCSE 1993). This article defines hernias and describes the aetiology and surgical treatment of inguinal and femoral hernia. The differences between the traditional and laparoscopic repair of hernias are explored as well as the use of materials such as polypropylene mesh to enhance the repair. The need for thromboprophylaxis and antibiotic therapy are outlined together with patient discharge advice.