A Cough is a sudden and often repetitively occurring reflex which helps to clear the large breathing passages from secretions, irritants, foreign particles and microbes. Chronic cough is defined as a cough lasting for three weeks or more. This is because most acute. Respiratory infections in children resolve within this interval. Chronic cough needs to be evaluated for the underlying disease in a systematic manner regarding the nature of cough, timing of cough, onset of cough, site of pathology, associated clinical features, response to previous medications, seriousness of problem, the differential diagnosis and investigations. Therapy should be based on physiologic derangement and etiology. Key word:Chronic cough in children, Bronchoscopy