Background: Forearm fractures are the most common fractures in children, representing 40 to 50 percent of all childhood fractures. Objective: To improving outcome of pediatric both bone forearm fractures using K-wires. Patients and Methods: This study included 24 patients aged between 3 and 12 years with closed displaced fractures of shaft of both bones forearm presented to Zagazig General Hospital. On admission all patients were assessed by history taking, clinical examination and radiological evaluation. The K-wires were passed under control of image intensifier across the fracture site as far as the proximal physis in the radius and the distal metaphysis in the ulna taking care not to reach the growth plate. Postoperatively the limb was placed in above elbow plaster cast with the elbow at 90 degrees of flexion and the forearm at mid pronation. After the follow up period (6 - 12) month the results of patients were assessed clinically and radiologically and were classified according to the Price criteria. Results: 9 patients (37.5%) were classified as excellent results while 15 patients (62.5%) were classified as good results and no patients were classified as fair or poor results. Conclusion: 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 indicatedwith excellent and good results.