Inguinal hernia is a kind of hernia, commonly known as “fallen intestine” and “small intestine gas”, which is a common surgical disease. If left untreated, a retractable mass may not be pushed back into the body, which is medically known as an incarcerated hernia, which can easily lead to ischemia and necrosis of the intestinal cavity or other intra-abdominal organs and can be life-threatening if not operated in time. With the exception of a few hernia in young children, hernias require surgery to be cured. There are many methods of hernia repair. The earliest classical hernia repair, in which the tissues on both sides of the defect are forcibly sutured together, but with high tension, the wound area feels uncomfortable and painful for a longer period of time after surgery, and has a high recurrence rate, so it is gradually replaced by tension-free hernia repair with open artificial mesh filling, which has greatly reduced the recurrence rate. In recent years, with the improvement of medical treatment, laparoscopic hernia repair has gained tremendous advantages. Laparoscopic complete extraperitoneal hernia repair (TEP) was first proposed by MeKernan et al. in 1992. The surgical principle is a subumbilical preperitoneal approach in which the preperitoneal space is freed under direct laparoscopic view, the hernia sac is peeled off to reach the spermatic peritoneum, and a patch is placed extraperitoneally to repair the pubococcygeal muscle foramen. This procedure changes the traditional access for repairing the disease, only two small incisions of 5 mm and one of 10 mm are needed, and the operation is performed completely outside the peritoneum, so that no additional incision is needed to treat bilateral hernias, and hidden hernias can be found and treated at the same time. It is the most ideal method for hernia repair because it can avoid the possibility of curing one hernia while another hernia occurs. In principle, TEP is suitable for patients over 16 years of age with all types of inguinal hernias without contraindications to surgery, especially for recurrent hernias after previous open surgery without destruction of the anterior peritoneal space, and for bilateral hernias. The cost of treatment is comparable to that of open artificial mesh repair, but because of its higher technical requirements and relatively longer learning curve compared to open surgery, an experienced surgeon is required to perform this procedure and it further reduces the recurrence rate.