Laparoscopic Total extraperitoneal herniorrhaphy (TEP) is an ideal method for inguinal hernia repair. TEP is difficult because it requires preliminary establishment of the preperitoneal space before access to the lens and instruments for specific surgical approaches and tissue levels. Beginners are prone to rupture of peritoneum in the process of dissection due to unclear tissue layers, making the operation difficult or conversion to Transabdominal preperitoneal (TAPP) hernia repair. SILS-TEP has advantages and disadvantages due to the simultaneous operation of lens and Laparoscopic instrument through a single umbilical incision. Since 2013, the author has used A self-made laparoscopic single-incision sealing device which named Iconport to complete various surgeries including transumbilical single-port laparoscopic appendectomy, cholecystectomy, gastroduodenal ulcer perforation repair, and Transabdominal preperitoneal (TAPP) hernia repair successively, with more than 200 cases. During these operations, the abdominal wall tissue adjacent to the umbilicus is cut open, the tissue under the linea alba which composed of peritoneum, preperitoneal fat and preperitoneal fascia could be seen, it seemed that the tissue were thick in 70-80% of patients but thin and prone to damage in 20-30% of patients. Based on the understanding of the incision in the umbilical abdominal wall and the anatomical of the preperitoneal space in Total extraperitoneal herniorrhaphy, the author attempted to perform TEP surgery via umbilical incision under posterior rectus abdominis sheath .Among these 40 surgeries, 39 patients successfully completed the SILS-TEP, and the other one added an auxiliary operating hole and completed the TEP approach. In our method, we believe that the key to the SILS-TEP operation is that the laparoscopic Iconport single-port device which used in the surgery. The silicone seal sleeve of Iconport which entering the incision only needs a small preperitoneal space to establish the pneumoperitoneum for laparoscopic operation. Because the initial preperitoneal space required for pneumoperitoneum is relatively small, it is less likely to cause peritoneal rupture under the incision or intraperitoneal hemorrhage. Once the pneumoperitoneum is successfully established, it becomes relatively easy to expand the preperitoneal space with the cooperation of two laparoscopic surgical instruments in the view of the microscope under the condition of maintaining good tension. As previously reported, most of the operations of SILS-TEP were performed in the anterior space of the posterior rectus sheath of the hernia side, which has the advantage that the peritoneum adjacent to the incision is not easy to be damaged. The author found it is more reasonable to creat the preperitoneal space under the posterior sheath of the rectus abdominis via the umbilical incision ,especially in the operation of bilateral hernia because it is not necessary to cut the posterior sheath of the rectus abdominis at the semi-loop line. In the surgery of SILS-TEP, two laparoscopic surgical instruments always enter the operative field through the same incision with the lens, and one instrument always presses down on the peritoneum, so the vision in front of the lens is always guaranteed even if the peritoneum is damaged at the beginning of the operation. Peritoneal rupture may delay the process of surgery but will not result in the transition to TAPP surgery. Hem-o-Lok clamping or stitching can be used to repair the peritoneal rupture far from the incision, while the peritoneal rupture near the incision can be left untreated because it is far from the mesh area of hernia repair. If the peritoneum is damaged near the incision, the lens and laparoscopic instruments can be used to observe the peritoneal cavity or assist in the operation of hernia contents retraction. Therefore, the author believes that during the surgery of SILS-TEP, the peritoneal cavity can be explored like TAPP surgery, and such a strategy is conducive to the operation of complex conditions. The peritoneum can be cut open at the incision, and the instruments can be guided into the peritoneal cavity or the preperitoneal space by the laparoscope, and then the instruments can push aside the peritoneum to create conditions for the follow-up of the lens. Most surgeons would believe a single incision laparoscopic operation is difficulty. In fact, the operation of expanding the preperitoneal space in the SILS-TEP is basically one instrument pulling or pressing the peritoneum to assist in the exposure of the operative field, and the other instrument to complete the tissue separation. In this operation, there is no problem in the flexibility of operation because only one instrument is frequently moving. When the indirect hernia sac is dissected, two adjacent operating holes on the panel can be selected. In this way, the two laparoscopic instruments will enter the preperitoneal space from a nearly parallel angle, and tip of the two instruments can be flexibly cooperated alternately. There are four operation holes on the panel of Iconport single-incision sealing device. Usually, the lens enters through the middle operation hole. Two operation holes on both sides of the lens or two adjacent operation holes are selected to operate, which represent two manipulative methods respectively. When a manipulative method is difficult, another method of manipulation can often be an effective replacement. Therefore, the panel features of Iconport are the basis for the flexible operation of laparoscopic surgery. During the operating of single-incision laparoscopic surgery, two laparoscopic instruments perform different functions, one pull or press organizations to create conditions for operation, which need a lever fulcrum to economize labour, the other one as the main operating instrument need flexible operation. The panel of the Iconport is made of hard material, the diameter of the operating hole is set at 15mm to ensure that the laparoscopic instrument with a diameter of 5mm has enough inclination angle in the operating hole. By selecting different operating hole to cooperate with each other, the operator can avoid the blind area of operation, the side wall of the operation hole is the fulcrum of instrument, which help the performer operation more efficient. When the position relationship between the lens and the instrument which responsible for pulling the tissue has been determined, there is a relatively loose clearance in the incision for the main operating hole instrument to use, when the performer insert the instrument in the right space ,the operating must be flexible. Therefore, the operation panel of Iconport not only provide stable and labor-saving fulcrum for the lens and operating instrument, but also make the instrument in the main operating hole move flexibly. The Iconport single-incision sealing device has the advantage of flexibility. In this study, the author chose ETHICON ULTRAPRO 15 * 17 cm Mesh as hernia repair material, because in the process of SILS-TEP surgery, the preperitoneal space was extended from navel, the Retzius' space is usually exposed throughout the pubic symphysis, full exposure of Retzius' space is conducive to maintaining peritoneal integrity when entering Bogros' space. However, for unilateral hernia, there is a risk of the mesh shifting inward, so the author chose the relatively large mesh currently available on the market. In bilateral hernia repair, the mesh overlaps more in the midline, which is also conducive to the coverage of the most common area of direct hernia. In summary, the author believes that relatively larger hernia repair materials should be selected in the operation of SILS-TEP to reasonably cover the preperitoneal space created during the operation.