Step 1: we used 3 trocars in 97.9% cases and 4 trocars in 2.1% cases; step 2: expose the inguinal area with hernia and determined anatomical landmark (100.0%); step 3: create the preperitoneal space on the hernia side (100.0%); step 4: the hernia sacs were retracted into the abdomen cavity in 86.3% and were cut at internal inguinal ring level in 13.7%; step 5: the mesh was fixed by sutures and tacks in 15.8% and 60.0% respectively and in the rest 24.2% cases the mesh was left unfixed; step 6: peritoneal closure using running absorbable suture was performed in all patients.