The inguinal hernia repair is one of the most frequent surgical procedures: in the world, even year, at least 20.000.000 inguinal hernia repair procedures are performed. Although the laparoscopic approach is widely recognized as a valid treatment for many diseases and some laparoscopic surgical procedures have become gold standard techniques (e. g. cholecystectomy, appendectomy, gastro-esophageal junction surgery), the minimally invasive approach for groin hernia treatment is still very controversial today, but in the last few years, it tends to become the standard practice for 1 day surgery. We present here the technique of laparoscopic Transabdominal Preperitoneal approach (TAPP). The surgical technique is described step-by-step, including surgical details and the new concept of “inverted Y” to achieve the “critical view of safety” for laparoscopic inguinal hernia repair.