The study was planned to be a case series, it included eighteen patients who wereadmitted to the critical care unit of the emergency department of Abo El-Resh pediatrichospital during the period of the study. The objective of the study was to evaluate the use ofthe flexible bronchoscopy in diagnosis and management of respiratory health problems facinginfants and young children.The mean age in months for the study group was 16.5 + - 14.4. The presentingsymptoms were mainly recurrent chest infection 61.6% & stridor 33.3 %. The onset wasgradual in 55.6% with progressive course in 72.2%. Family history was positive in 55.6%.General examination showed that the children were either cyanosed in 44.4 % or pale in55.6%. Chest examination showed diminished air entry in 50%. Lab investigations illustratedmean HB was 9.4 +- .9, platelet count, coagulation profile, KFT and LFT were all withinnormal.The majority of the group was below the 5 th Percentile 94% for weight. Chest x ray andCT were abnormal. Stridor, persistent collapse & recurrent pneumonia were the mainindications for doing the flexible bronchoscopy.Variety of diagnostic results was shown: subglottic stenosis 27.8%, mucus plug 16.7 %,inflamed air ways and secretions 16.7%. BAL analysis illustrated the causative organism andantibiotic needed.The study showed the diagnostic and management value of the flexible bronchoscopy inthe study group.