Healing of non-union infected fracture bones like tibia is a challenging one. Ilizarov external ring fixation is the appropriate method. The aim of our study is to evaluate the efficacy of Ilizarov external ring fixator in infected nonunion of bones and functional results in 20 patients and to conduct the study of complications. The age group included in our study were between 30 to 40 years of the 20 cases 17 were males and 3 were females. Of the 20 cases in our study, 14 cases had excellent results, 4 cases had good outcome, 1 patient had fair outcome, 1 cases had poor outcome. The study shows that Ilizarov ring external fixator system is ideal for limb salvage in infected nonunion of long bones.