Background: Forearm fractures are the most common fractures in children, representing 40 to 50 percent of all childhood fractures. The aim of this work is to evaluate the results of percutaneous intramedullary fixation of fractures of forearm bones in children. The aim of this work is to evaluate the results of percutaneous intramedullary fixation of fractures of forearm bones in children. Methods: Between February 2017 and February 2018, 12 patients who are younger than the age of closure of epiphysis exhibited to Zagazig General Hospital suffering from displaced fractures of shaft of both bones of the forearm, all patients were treated by closed reduction and percutaneous intramedullary fixation by K-wires with a period of (6 -12) month with mean 6.6 moths follow up. Results: At the end of follow up, the operations were succeeding in all cases. According to Price et al criteria, 8 patients (66.7%) were classified as excellent results, 4 patients (33.3%) were classified as good results and no patients were classified as fair or poor results. No complication detected after the end of follow up period. Conclusions: Closed reduction percutaneous intramedullary fixation of pediatric displaced diaphyseal forearm fractures by K-wires is a safe, reliable, minimally invasive procedure and effective method of treatment. Based upon this study, it is concluded that displaced fractures of both forearm bones in children are preferred to be intramedullary fixed with K-wires when surgery is indicated with excellent and good results.