GERD raises respiratory symptoms and the treatment of anti- GERD improve these symptoms and improve pulmonary function, sometimes GERD silent clinically which makes us unaware of the role of GERD in pathogenesis of respiratory infections which leading to increased incidence of respiratory symptoms in patients with GERD and for this reason we must search for GERD in chronic respiratory infections not responding to treatment. To determine the prevalence of clinical symptoms associated with GERD in children and to define the role of treatment of anti-GERD in the management of respiratory symptoms in children.