Single-site laparoscopic percutaneous extraperitoneal ligation (SLPEL) for pediatric inguinal hernia gained popularity all over the world. However, complications associated with extraperitoneal knotting were not rare in the classical SLPEL(C-SLPEL) procedure. In order to overcome disadvantages, we herein developed the modified SLPEL (M-SLPEL) procedure, intact circuit ligation of the peritoneum around the internal ring using a homemade hernia needle with a single abdominal wall centesis. To evaluated the effectiveness of the M-SLPEL procedure to decrease adverse events associated with ligation knotting, a comparative study was carried out. A total of 3219 patients from multiple centers were divided into two groups according to the operative procedures: M-SLPEL group and C-SLPEL group. All patients were followed up. Data describing the clinical characteristics, operative time, postoperative hospital stay, and complications was collected and retrospectively analyzed. With equivalent operative time, postoperative hospital stay, there was statistically significant difference between two groups in terms of the overall complications incidence (2.6% in C-SLPEL Vs 0.11% in M-SLPEL, P=0.03), including pain in inguinal area, knot foreign body reaction, palpable knot, recurrence. Together, these findings suggest that the M-SLPEL procedure is an effective and safe approach, with unique advantage in reducing adverse events in the inguinal region.