Plastic of the inguinal hernia by the method of I.L. Lichtenstein is now widely used in clinics in the USA and Western Europe and is a «gold standard». The analysis of the results of surgical treatment of 120 patients with inguinal hernia, which is operated aloplasty by the method of I.L. Lichtenstein using «Ethicon» prolene mesh «heavy» mesh implants and «Ethicon» and «Omega-2 DP» Ultrapro «light» mesh implants «Ukrainian chain mail». The inguinal hernia in size, according to the classification of the European Society of Herniologists (EHS), was pL2 in 39 (32.5 %) patients, pL3 in 31 (25.8 %), pM2 in 28 (23.3 %), pM3 – in 12 (10.0 %), pC2 in 4 (3.3 %), rL2 in 3 (2.5 %), rM2 in 3 (2.5 %). All patients are operated in a planned manner. One group, 80 (66.7 %), was operated using aloplasty by the I.L. Lichtenstein method using the «light» ultraprotective implants of the company «Ethicon» and Omega-2 of the DP «Ukrainian chain mail», while the other 40 (33.3 %) – the «heavy» mesh implants of the prolene mesh of Ethicon Company. In analyzing the incidence of postoperative complications, the highest frequency (20 %) was observed in patients with a «heavy» implant (Fischer's angle criterion pφ<0.01) and due to complications associated with irritation of the nerve of the inguinal site 11.7 %: inguinal neuralgia 5 %, external body sensation 6.7 % (Fisher's angle criterion pφ<0.05). On the first day in the postoperative period, only 3 patients after alloplasty underwent intensive pain syndrome using the I.L. Lichtenstein method with a «heavy» implant according to the VAS scale. Patients after aloplasty with «heavy» implants by the method of I.L. Lichtenstein on the seventh day were more likely to have pain.