Respiratory diseases are a major cause of morbidity and mortality in developing countries. Recurrent respiratory infections in children pose a great challenge to the pediatrician where he has to exercise his clinical acumen and methodical approach for correct diagnosis and treatment. It is a fact that children should suffer 7 to 8 upper respiratory infections per year until they are 5 years of age when their immune status reaches adult level. In this situation, it is essential to find out whether the frequencies are abnormal. Whenever a child has the following problems, then only it needs to be investigated.--(a) repeated bacterial pneumonias; (b) a child less than 3 months old having repeated respiratory infections; (c) a child of 9 months old without a history of exposure infections; (d) infections complicating into bronchiectasis and; (e) in a child where there is no history of allergy or asthma. Once the problem is established as a true recurrent respiratory infection, the clinician should pose questions--whether it is chronic, acute or recurrent, to find out the site of pathology, seriousness of the problem, response to previous medications, to establish the possible diagnosis which fall into six categories--congenital anamolies, aspiration syndrome, genital disorders, immunological diseases, immune deficiency disorders and allergic diseases. The author discusses quoting some examples for various categories avoiding non pulmonary causes for recurrent respiratory infections in children.